50515011555 has 16 divisors (see below), whose sum is σ = 81657258144. Its totient is φ = 26663592960.

The previous prime is 50515011553. The next prime is 50515011563. The reversal of 50515011555 is 55511051505.

It is not a de Polignac number, because 50515011555 - 2¹ = 50515011553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (50515011553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17357656 + ... + 17360565.

It is an arithmetic number, because the mean of its divisors is an integer number (5103578634).

Almost surely, 2^50515011555 is an apocalyptic number.

50515011555 is a deficient number, since it is larger than the sum of its proper divisors (31142246589).

50515011555 is a wasteful number, since it uses less digits than its factorization.

50515011555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34718326.

The product of its (nonzero) digits is 15625, while the sum is 33.

The spelling of 50515011555 in words is "fifty billion, five hundred fifteen million, eleven thousand, five hundred fifty-five".