50571421765 has 8 divisors (see below), whose sum is σ = 60790884120. Its totient is φ = 40387018752.

The previous prime is 50571421753. The next prime is 50571421781. The reversal of 50571421765 is 56712417505.

It can be written as a sum of positive squares in 4 ways, for example, as 9676066689 + 40895355076 = 98367^2 + 202226^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-50571421765 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8761660 + ... + 8767429.

It is an arithmetic number, because the mean of its divisors is an integer number (7598860515).

Almost surely, 2^50571421765 is an apocalyptic number.

It is an amenable number.

50571421765 is a deficient number, since it is larger than the sum of its proper divisors (10219462355).

50571421765 is a wasteful number, since it uses less digits than its factorization.

50571421765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17529671.

The product of its (nonzero) digits is 294000, while the sum is 43.

The spelling of 50571421765 in words is "fifty billion, five hundred seventy-one million, four hundred twenty-one thousand, seven hundred sixty-five".