51110051515 has 8 divisors (see below), whose sum is σ = 61800246288. Its totient is φ = 40575918240.

The previous prime is 51110051437. The next prime is 51110051561. The reversal of 51110051515 is 51515001115.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 51110051515 - 2²⁵ = 51076497083 is a prime.

It is a super-2 number, since 2×51110051515² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51110051515.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39014652 + ... + 39015961.

It is an arithmetic number, because the mean of its divisors is an integer number (7725030786).

Almost surely, 2^51110051515 is an apocalyptic number.

51110051515 is a deficient number, since it is larger than the sum of its proper divisors (10690194773).

51110051515 is a wasteful number, since it uses less digits than its factorization.

51110051515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78030749.

The product of its (nonzero) digits is 625, while the sum is 25.

The spelling of 51110051515 in words is "fifty-one billion, one hundred ten million, fifty-one thousand, five hundred fifteen".