50611555064 has 64 divisors (see below), whose sum is σ = 116033049600. Its totient is φ = 20212156800.

The previous prime is 50611555061. The next prime is 50611555069. The reversal of 50611555064 is 46055511605.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50611555061) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 324992 + ... + 454799.

It is an arithmetic number, because the mean of its divisors is an integer number (1813016400).

Almost surely, 2^50611555064 is an apocalyptic number.

It is an amenable number.

50611555064 is an abundant number, since it is smaller than the sum of its proper divisors (65421494536).

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

50611555064 is a wasteful number, since it uses less digits than its factorization.

50611555064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 779884 (or 779880 counting only the distinct ones).

The product of its (nonzero) digits is 90000, while the sum is 38.

The spelling of 50611555064 in words is "fifty billion, six hundred eleven million, five hundred fifty-five thousand, sixty-four".