29387253856 has 12 divisors (see below), whose sum is σ = 57856156092. Its totient is φ = 14693626912.

The previous prime is 29387253851. The next prime is 29387253859. The reversal of 29387253856 is 65835278392.

It is a super-2 number, since 2×29387253856² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 29387253856.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29387253851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 459175810 + ... + 459175873.

It is an arithmetic number, because the mean of its divisors is an integer number (4821346341).

Almost surely, 2^29387253856 is an apocalyptic number.

It is an amenable number.

29387253856 is a deficient number, since it is larger than the sum of its proper divisors (28468902236).

29387253856 is an equidigital number, since it uses as much as digits as its factorization.

29387253856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 918351693 (or 918351685 counting only the distinct ones).

The product of its digits is 21772800, while the sum is 58.

The spelling of 29387253856 in words is "twenty-nine billion, three hundred eighty-seven million, two hundred fifty-three thousand, eight hundred fifty-six".