50871977907 has 4 divisors (see below), whose sum is σ = 67829303880. Its totient is φ = 33914651936.

The previous prime is 50871977903. The next prime is 50871977927. The reversal of 50871977907 is 70977917805.

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 50871977907 - 2² = 50871977903 is a prime.

It is a super-2 number, since 2×50871977907² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (50871977903) 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, 8478662982 + ... + 8478662987.

It is an arithmetic number, because the mean of its divisors is an integer number (16957325970).

Almost surely, 2^50871977907 is an apocalyptic number.

50871977907 is a deficient number, since it is larger than the sum of its proper divisors (16957325973).

50871977907 is a wasteful number, since it uses less digits than its factorization.

50871977907 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16957325972.

The product of its (nonzero) digits is 7779240, while the sum is 60.

The spelling of 50871977907 in words is "fifty billion, eight hundred seventy-one million, nine hundred seventy-seven thousand, nine hundred seven".