51455451213 has 48 divisors (see below), whose sum is σ = 78427574784. Its totient is φ = 32444332800.

The previous prime is 51455451211. The next prime is 51455451221. The reversal of 51455451213 is 31215455415.

51455451213 is a `hidden beast` number, since 51 + 4 + 554 + 51 + 2 + 1 + 3 = 666.

It is not a de Polignac number, because 51455451213 - 2¹ = 51455451211 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51455451211) 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 47 ways as a sum of consecutive naturals, for example, 24941020 + ... + 24943082.

It is an arithmetic number, because the mean of its divisors is an integer number (1633907808).

Almost surely, 2^51455451213 is an apocalyptic number.

It is an amenable number.

51455451213 is a deficient number, since it is larger than the sum of its proper divisors (26972123571).

51455451213 is a wasteful number, since it uses less digits than its factorization.

51455451213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3386 (or 3383 counting only the distinct ones).

The product of its digits is 60000, while the sum is 36.

The spelling of 51455451213 in words is "fifty-one billion, four hundred fifty-five million, four hundred fifty-one thousand, two hundred thirteen".