51455113605 has 24 divisors (see below), whose sum is σ = 101930130432. Its totient is φ = 23522337504.

The previous prime is 51455113603. The next prime is 51455113609. The reversal of 51455113605 is 50631155415.

51455113605 is a `hidden beast` number, since 5 + 1 + 45 + 5 + 1 + 1 + 3 + 605 = 666.

It is not a de Polignac number, because 51455113605 - 2¹ = 51455113603 is a prime.

It is a super-2 number, since 2×51455113605² (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 51455113605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51455113603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 81674469 + ... + 81675098.

It is an arithmetic number, because the mean of its divisors is an integer number (4247088768).

Almost surely, 2^51455113605 is an apocalyptic number.

It is an amenable number.

51455113605 is a deficient number, since it is larger than the sum of its proper divisors (50475016827).

51455113605 is a wasteful number, since it uses less digits than its factorization.

51455113605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163349585 (or 163349582 counting only the distinct ones).

The product of its (nonzero) digits is 45000, while the sum is 36.

The spelling of 51455113605 in words is "fifty-one billion, four hundred fifty-five million, one hundred thirteen thousand, six hundred five".