56170735129 has 16 divisors (see below), whose sum is σ = 58880016000. Its totient is φ = 53516687616.

The previous prime is 56170735111. The next prime is 56170735141. The reversal of 56170735129 is 92153707165.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56170735129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56170735109) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 812097 + ... + 878545.

It is an arithmetic number, because the mean of its divisors is an integer number (3680001000).

Almost surely, 2^56170735129 is an apocalyptic number.

It is an amenable number.

56170735129 is a deficient number, since it is larger than the sum of its proper divisors (2709280871).

56170735129 is a wasteful number, since it uses less digits than its factorization.

56170735129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66864.

The product of its (nonzero) digits is 396900, while the sum is 46.

The spelling of 56170735129 in words is "fifty-six billion, one hundred seventy million, seven hundred thirty-five thousand, one hundred twenty-nine".