38505218535 has 64 divisors (see below), whose sum is σ = 82834790400. Its totient is φ = 16566944256.

The previous prime is 38505218509. The next prime is 38505218567. The reversal of 38505218535 is 53581250583.

38505218535 is a `hidden beast` number, since 3 + 8 + 50 + 52 + 18 + 535 = 666.

It is not a de Polignac number, because 38505218535 - 2⁵ = 38505218503 is a prime.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1182355 + ... + 1214484.

It is an arithmetic number, because the mean of its divisors is an integer number (1294293600).

Almost surely, 2^38505218535 is an apocalyptic number.

38505218535 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

38505218535 is an abundant number, since it is smaller than the sum of its proper divisors (44329571865).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

38505218535 is a wasteful number, since it uses less digits than its factorization.

38505218535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2396877 (or 2396871 counting only the distinct ones).

The product of its (nonzero) digits is 720000, while the sum is 45.

The spelling of 38505218535 in words is "thirty-eight billion, five hundred five million, two hundred eighteen thousand, five hundred thirty-five".