56536830451989 has 32 divisors (see below), whose sum is σ = 83964356784000. Its totient is φ = 37598527601280.

The previous prime is 56536830451891. The next prime is 56536830451993. The reversal of 56536830451989 is 98915403863565.

56536830451989 is a `hidden beast` number, since 5 + 6 + 5 + 3 + 6 + 83 + 0 + 451 + 98 + 9 = 666.

It is not a de Polignac number, because 56536830451989 - 2¹² = 56536830447893 is a prime.

It is a super-2 number, since 2×56536830451989² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56536830451489) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 42271222 + ... + 43588184.

It is an arithmetic number, because the mean of its divisors is an integer number (2623886149500).

Almost surely, 2^{56536830451989} is an apocalyptic number.

It is an amenable number.

56536830451989 is a deficient number, since it is larger than the sum of its proper divisors (27427526332011).

56536830451989 is a wasteful number, since it uses less digits than its factorization.

56536830451989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1320882 (or 1320876 counting only the distinct ones).

The product of its (nonzero) digits is 839808000, while the sum is 72.

The spelling of 56536830451989 in words is "fifty-six trillion, five hundred thirty-six billion, eight hundred thirty million, four hundred fifty-one thousand, nine hundred eighty-nine".