29427146856 has 64 divisors (see below), whose sum is σ = 82584835200. Its totient is φ = 9707917824.

The previous prime is 29427146851. The next prime is 29427146909. The reversal of 29427146856 is 65864172492.

29427146856 is a `hidden beast` number, since 29 + 42 + 71 + 468 + 56 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (29427146851) 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 in 15 ways as a sum of consecutive naturals, for example, 681300 + ... + 723203.

It is an arithmetic number, because the mean of its divisors is an integer number (1290388050).

Almost surely, 2^29427146856 is an apocalyptic number.

It is an amenable number.

29427146856 is an abundant number, since it is smaller than the sum of its proper divisors (53157688344).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

29427146856 is a wasteful number, since it uses less digits than its factorization.

29427146856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1404615 (or 1404605 counting only the distinct ones).

The product of its digits is 5806080, while the sum is 54.

The spelling of 29427146856 in words is "twenty-nine billion, four hundred twenty-seven million, one hundred forty-six thousand, eight hundred fifty-six".