50122021565 has 96 divisors (see below), whose sum is σ = 79680962304. Its totient is φ = 29399086080.

The previous prime is 50122021511. The next prime is 50122021583. The reversal of 50122021565 is 56512022105.

It is not a de Polignac number, because 50122021565 - 2⁸ = 50122021309 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 21819497 + ... + 21821793.

It is an arithmetic number, because the mean of its divisors is an integer number (830010024).

Almost surely, 2^50122021565 is an apocalyptic number.

50122021565 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

50122021565 is a deficient number, since it is larger than the sum of its proper divisors (29558940739).

50122021565 is a wasteful number, since it uses less digits than its factorization.

50122021565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2515 (or 2496 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 29.

The spelling of 50122021565 in words is "fifty billion, one hundred twenty-two million, twenty-one thousand, five hundred sixty-five".