56551727999 has 16 divisors (see below), whose sum is σ = 63005027904. Its totient is φ = 50424096000.

The previous prime is 56551727987. The next prime is 56551728011. The reversal of 56551727999 is 99972715565.

It is an interprime number because it is at equal distance from previous prime (56551727987) and next prime (56551728011).

It is not a de Polignac number, because 56551727999 - 2¹² = 56551723903 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56551727399) 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, 471419 + ... + 579084.

It is an arithmetic number, because the mean of its divisors is an integer number (3937814244).

Almost surely, 2^56551727999 is an apocalyptic number.

56551727999 is a deficient number, since it is larger than the sum of its proper divisors (6453299905).

56551727999 is a wasteful number, since it uses less digits than its factorization.

56551727999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1050658.

The product of its digits is 53581500, while the sum is 65.

The spelling of 56551727999 in words is "fifty-six billion, five hundred fifty-one million, seven hundred twenty-seven thousand, nine hundred ninety-nine".