55785611427 has 64 divisors (see below), whose sum is σ = 93029400576. Its totient is φ = 28950203520.

The previous prime is 55785611419. The next prime is 55785611459. The reversal of 55785611427 is 72411658755.

55785611427 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 55785611427 - 2³ = 55785611419 is a prime.

It is a super-2 number, since 2×55785611427² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 55785611427.

It is not an unprimeable number, because it can be changed into a prime (55785611477) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 10134558 + ... + 10140060.

It is an arithmetic number, because the mean of its divisors is an integer number (1453584384).

Almost surely, 2^55785611427 is an apocalyptic number.

55785611427 is a deficient number, since it is larger than the sum of its proper divisors (37243789149).

55785611427 is a wasteful number, since it uses less digits than its factorization.

55785611427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6120.

The product of its digits is 2352000, while the sum is 51.

The spelling of 55785611427 in words is "fifty-five billion, seven hundred eighty-five million, six hundred eleven thousand, four hundred twenty-seven".