51353212545 has 64 divisors (see below), whose sum is σ = 92877269760. Its totient is φ = 26916281856.

The previous prime is 51353212513. The next prime is 51353212571. The reversal of 51353212545 is 54521235315.

51353212545 is a `hidden beast` number, since 51 + 3 + 53 + 2 + 12 + 545 = 666.

It is not a de Polignac number, because 51353212545 - 2⁵ = 51353212513 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2779759 + ... + 2798171.

It is an arithmetic number, because the mean of its divisors is an integer number (1451207340).

Almost surely, 2^51353212545 is an apocalyptic number.

It is an amenable number.

51353212545 is a deficient number, since it is larger than the sum of its proper divisors (41524057215).

51353212545 is a wasteful number, since it uses less digits than its factorization.

51353212545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18783 (or 18777 counting only the distinct ones).

The product of its digits is 90000, while the sum is 36.

The spelling of 51353212545 in words is "fifty-one billion, three hundred fifty-three million, two hundred twelve thousand, five hundred forty-five".