56017020729 has 8 divisors (see below), whose sum is σ = 74691030240. Its totient is φ = 37343845856.

The previous prime is 56017020727. The next prime is 56017020737. The reversal of 56017020729 is 92702071065.

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

It is a cyclic number.

It is not a de Polignac number, because 56017020729 - 2¹ = 56017020727 is a prime.

It is a super-2 number, since 2×56017020729² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (56017020727) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30267 + ... + 336080.

It is an arithmetic number, because the mean of its divisors is an integer number (9336378780).

Almost surely, 2^56017020729 is an apocalyptic number.

It is an amenable number.

56017020729 is a deficient number, since it is larger than the sum of its proper divisors (18674009511).

56017020729 is a wasteful number, since it uses less digits than its factorization.

56017020729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 417319.

The product of its (nonzero) digits is 52920, while the sum is 39.

The spelling of 56017020729 in words is "fifty-six billion, seventeen million, twenty thousand, seven hundred twenty-nine".