56072819557 has 4 divisors (see below), whose sum is σ = 56112901600. Its totient is φ = 56032737516.

The previous prime is 56072819527. The next prime is 56072819573. The reversal of 56072819557 is 75591827065.

56072819557 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 56072819557 - 2³¹ = 53925335909 is a prime.

It is a super-2 number, since 2×56072819557² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 56072819498 and 56072819507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56072819507) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20038923 + ... + 20041720.

It is an arithmetic number, because the mean of its divisors is an integer number (14028225400).

Almost surely, 2^56072819557 is an apocalyptic number.

It is an amenable number.

56072819557 is a deficient number, since it is larger than the sum of its proper divisors (40082043).

56072819557 is a wasteful number, since it uses less digits than its factorization.

56072819557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40082042.

The product of its (nonzero) digits is 5292000, while the sum is 55.

The spelling of 56072819557 in words is "fifty-six billion, seventy-two million, eight hundred nineteen thousand, five hundred fifty-seven".