51015311049 has 16 divisors (see below), whose sum is σ = 72506777600. Its totient is φ = 31812343056.

The previous prime is 51015311029. The next prime is 51015311063. The reversal of 51015311049 is 94011351015.

It is not a de Polignac number, because 51015311049 - 2²³ = 51006922441 is a prime.

It is a super-2 number, since 2×51015311049² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51015311029) 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 15 ways as a sum of consecutive naturals, for example, 5660089 + ... + 5669094.

It is an arithmetic number, because the mean of its divisors is an integer number (4531673600).

Almost surely, 2^51015311049 is an apocalyptic number.

It is an amenable number.

51015311049 is a deficient number, since it is larger than the sum of its proper divisors (21491466551).

51015311049 is a wasteful number, since it uses less digits than its factorization.

51015311049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11329284.

The product of its (nonzero) digits is 2700, while the sum is 30.

The spelling of 51015311049 in words is "fifty-one billion, fifteen million, three hundred eleven thousand, forty-nine".