51551115153 has 24 divisors (see below), whose sum is σ = 73096806816. Its totient is φ = 32309971200.

The previous prime is 51551115151. The next prime is 51551115173. The reversal of 51551115153 is 35151115515.

It is a happy number.

It is not a de Polignac number, because 51551115153 - 2¹ = 51551115151 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51551115151) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 39808 + ... + 323553.

It is an arithmetic number, because the mean of its divisors is an integer number (3045700284).

Almost surely, 2^51551115153 is an apocalyptic number.

It is an amenable number.

51551115153 is a deficient number, since it is larger than the sum of its proper divisors (21545691663).

51551115153 is a wasteful number, since it uses less digits than its factorization.

51551115153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 363533 (or 363514 counting only the distinct ones).

The product of its digits is 9375, while the sum is 33.

The spelling of 51551115153 in words is "fifty-one billion, five hundred fifty-one million, one hundred fifteen thousand, one hundred fifty-three".