56259992181 has 16 divisors (see below), whose sum is σ = 75797377920. Its totient is φ = 37115688960.

The previous prime is 56259992179. The next prime is 56259992183. The reversal of 56259992181 is 18129995265.

It is an interprime number because it is at equal distance from previous prime (56259992179) and next prime (56259992183).

It is not a de Polignac number, because 56259992181 - 2¹ = 56259992179 is a prime.

It is a super-2 number, since 2×56259992181² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56259992183) 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, 82405 + ... + 345413.

It is an arithmetic number, because the mean of its divisors is an integer number (4737336120).

Almost surely, 2^56259992181 is an apocalyptic number.

It is an amenable number.

56259992181 is a deficient number, since it is larger than the sum of its proper divisors (19537385739).

56259992181 is a wasteful number, since it uses less digits than its factorization.

56259992181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263756.

The product of its digits is 3499200, while the sum is 57.

The spelling of 56259992181 in words is "fifty-six billion, two hundred fifty-nine million, nine hundred ninety-two thousand, one hundred eighty-one".