50363390565 has 48 divisors (see below), whose sum is σ = 87735538800. Its totient is φ = 26725708800.

The previous prime is 50363390557. The next prime is 50363390587. The reversal of 50363390565 is 56509336305.

50363390565 is a `hidden beast` number, since 5 + 0 + 3 + 633 + 9 + 0 + 5 + 6 + 5 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 1582925796 + 48780464769 = 39786^2 + 220863^2 .

It is not a de Polignac number, because 50363390565 - 2³ = 50363390557 is a prime.

It is a super-2 number, since 2×50363390565² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 50363390565.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 9239961 + ... + 9245409.

It is an arithmetic number, because the mean of its divisors is an integer number (1827823725).

Almost surely, 2^50363390565 is an apocalyptic number.

It is an amenable number.

50363390565 is a deficient number, since it is larger than the sum of its proper divisors (37372148235).

50363390565 is a wasteful number, since it uses less digits than its factorization.

50363390565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6454 (or 6451 counting only the distinct ones).

The product of its (nonzero) digits is 1093500, while the sum is 45.

The spelling of 50363390565 in words is "fifty billion, three hundred sixty-three million, three hundred ninety thousand, five hundred sixty-five".