55786270813 has 48 divisors (see below), whose sum is σ = 73192129536. Its totient is φ = 41559298560.

The previous prime is 55786270807. The next prime is 55786270817. The reversal of 55786270813 is 31807268755.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-55786270813 is a prime.

It is a super-2 number, since 2×55786270813² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55786270817) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1336345 + ... + 1377457.

It is an arithmetic number, because the mean of its divisors is an integer number (1524836032).

Almost surely, 2^55786270813 is an apocalyptic number.

It is an amenable number.

55786270813 is a deficient number, since it is larger than the sum of its proper divisors (17405858723).

55786270813 is a wasteful number, since it uses less digits than its factorization.

55786270813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41214 (or 41201 counting only the distinct ones).

The product of its (nonzero) digits is 2822400, while the sum is 52.

The spelling of 55786270813 in words is "fifty-five billion, seven hundred eighty-six million, two hundred seventy thousand, eight hundred thirteen".