51212664153 has 20 divisors (see below), whose sum is σ = 87431850880. Its totient is φ = 29264379192.

The previous prime is 51212664149. The next prime is 51212664193. The reversal of 51212664153 is 35146621215.

51212664153 is a `hidden beast` number, since 5 + 1 + 2 + 1 + 2 + 6 + 641 + 5 + 3 = 666.

It is not a de Polignac number, because 51212664153 - 2² = 51212664149 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51212664193) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 45160513 + ... + 45161646.

It is an arithmetic number, because the mean of its divisors is an integer number (4371592544).

Almost surely, 2^51212664153 is an apocalyptic number.

It is an amenable number.

51212664153 is a deficient number, since it is larger than the sum of its proper divisors (36219186727).

51212664153 is an equidigital number, since it uses as much as digits as its factorization.

51212664153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90322178 (or 90322169 counting only the distinct ones).

The product of its digits is 43200, while the sum is 36.

The spelling of 51212664153 in words is "fifty-one billion, two hundred twelve million, six hundred sixty-four thousand, one hundred fifty-three".