51015140699 has 4 divisors (see below), whose sum is σ = 51015596280. Its totient is φ = 51014685120.

The previous prime is 51015140651. The next prime is 51015140773. The reversal of 51015140699 is 99604151015.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 51015140699 - 2²⁴ = 50998363483 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51015140609) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69572 + ... + 326910.

It is an arithmetic number, because the mean of its divisors is an integer number (12753899070).

Almost surely, 2^51015140699 is an apocalyptic number.

51015140699 is a deficient number, since it is larger than the sum of its proper divisors (455581).

51015140699 is a wasteful number, since it uses less digits than its factorization.

51015140699 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 455580.

The product of its (nonzero) digits is 48600, while the sum is 41.

The spelling of 51015140699 in words is "fifty-one billion, fifteen million, one hundred forty thousand, six hundred ninety-nine".