51121534415 has 16 divisors (see below), whose sum is σ = 71297832960. Its totient is φ = 34460616480.

The previous prime is 51121534403. The next prime is 51121534421. The reversal of 51121534415 is 51443512115.

It is not a de Polignac number, because 51121534415 - 2⁶ = 51121534351 is a prime.

It is a super-2 number, since 2×51121534415² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12376031 + ... + 12380160.

It is an arithmetic number, because the mean of its divisors is an integer number (4456114560).

Almost surely, 2^51121534415 is an apocalyptic number.

51121534415 is a deficient number, since it is larger than the sum of its proper divisors (20176298545).

51121534415 is a wasteful number, since it uses less digits than its factorization.

51121534415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24756262.

The product of its digits is 12000, while the sum is 32.

The spelling of 51121534415 in words is "fifty-one billion, one hundred twenty-one million, five hundred thirty-four thousand, four hundred fifteen".