51002142115 has 4 divisors (see below), whose sum is σ = 61202570544. Its totient is φ = 40801713688.

The previous prime is 51002142109. The next prime is 51002142241. The reversal of 51002142115 is 51124120015.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 51002142115 - 2⁷ = 51002141987 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5100214207 + ... + 5100214216.

It is an arithmetic number, because the mean of its divisors is an integer number (15300642636).

Almost surely, 2^51002142115 is an apocalyptic number.

51002142115 is a deficient number, since it is larger than the sum of its proper divisors (10200428429).

51002142115 is a wasteful number, since it uses less digits than its factorization.

51002142115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10200428428.

The product of its (nonzero) digits is 400, while the sum is 22.

The spelling of 51002142115 in words is "fifty-one billion, two million, one hundred forty-two thousand, one hundred fifteen".