50611515997 has 4 divisors (see below), whose sum is σ = 57841732576. Its totient is φ = 43381299420.

The previous prime is 50611515971. The next prime is 50611516003. The reversal of 50611515997 is 79951511605.

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 50611515997 - 2⁷ = 50611515869 is a prime.

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 50611515997.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50611515697) 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, 3615108279 + ... + 3615108292.

It is an arithmetic number, because the mean of its divisors is an integer number (14460433144).

Almost surely, 2^50611515997 is an apocalyptic number.

It is an amenable number.

50611515997 is a deficient number, since it is larger than the sum of its proper divisors (7230216579).

50611515997 is an equidigital number, since it uses as much as digits as its factorization.

50611515997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7230216578.

The product of its (nonzero) digits is 425250, while the sum is 49.

The spelling of 50611515997 in words is "fifty billion, six hundred eleven million, five hundred fifteen thousand, nine hundred ninety-seven".