5100515051561 has 4 divisors (see below), whose sum is σ = 5100877549824. Its totient is φ = 5100152553300.

The previous prime is 5100515051557. The next prime is 5100515051603. The reversal of 5100515051561 is 1651505150015.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 5100515051561 - 2² = 5100515051557 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5100515051461) 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, 181228025 + ... + 181256166.

It is an arithmetic number, because the mean of its divisors is an integer number (1275219387456).

Almost surely, 2^{5100515051561} is an apocalyptic number.

It is an amenable number.

5100515051561 is a deficient number, since it is larger than the sum of its proper divisors (362498263).

5100515051561 is a wasteful number, since it uses less digits than its factorization.

5100515051561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 362498262.

The product of its (nonzero) digits is 18750, while the sum is 35.

The spelling of 5100515051561 in words is "five trillion, one hundred billion, five hundred fifteen million, fifty-one thousand, five hundred sixty-one".