28071157671 has 24 divisors (see below), whose sum is σ = 40806498096. Its totient is φ = 18594576000.

The previous prime is 28071157663. The next prime is 28071157679. The reversal of 28071157671 is 17675117082.

28071157671 is a `hidden beast` number, since 2 + 8 + 0 + 7 + 1 + 1 + 576 + 71 = 666.

It is an interprime number because it is at equal distance from previous prime (28071157663) and next prime (28071157679).

It is not a de Polignac number, because 28071157671 - 2³ = 28071157663 is a prime.

It is a super-3 number, since 3×28071157671³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28071157679) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3114171 + ... + 3123171.

It is an arithmetic number, because the mean of its divisors is an integer number (1700270754).

Almost surely, 2^28071157671 is an apocalyptic number.

28071157671 is a deficient number, since it is larger than the sum of its proper divisors (12735340425).

28071157671 is a wasteful number, since it uses less digits than its factorization.

28071157671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11183 (or 11180 counting only the distinct ones).

The product of its (nonzero) digits is 164640, while the sum is 45.

The spelling of 28071157671 in words is "twenty-eight billion, seventy-one million, one hundred fifty-seven thousand, six hundred seventy-one".