77853870771 has 8 divisors (see below), whose sum is σ = 103876707264. Its totient is φ = 51866807400.

The previous prime is 77853870751. The next prime is 77853870779. The reversal of 77853870771 is 17707835877.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 77853870771 - 2¹⁴ = 77853854387 is a prime.

It is a super-2 number, since 2×77853870771² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (77853870779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8938201 + ... + 8946906.

It is an arithmetic number, because the mean of its divisors is an integer number (12984588408).

Almost surely, 2^77853870771 is an apocalyptic number.

77853870771 is a deficient number, since it is larger than the sum of its proper divisors (26022836493).

77853870771 is a wasteful number, since it uses less digits than its factorization.

77853870771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17886561.

The product of its (nonzero) digits is 16134720, while the sum is 60.

The spelling of 77853870771 in words is "seventy-seven billion, eight hundred fifty-three million, eight hundred seventy thousand, seven hundred seventy-one".