50642156166 has 64 divisors (see below), whose sum is σ = 118497240576. Its totient is φ = 14126515200.

The previous prime is 50642156143. The next prime is 50642156177. The reversal of 50642156166 is 66165124605.

50642156166 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×50642156166² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5487436 + ... + 5496656.

It is an arithmetic number, because the mean of its divisors is an integer number (1851519384).

Almost surely, 2^50642156166 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 50642156166, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59248620288).

50642156166 is an abundant number, since it is smaller than the sum of its proper divisors (67855084410).

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

50642156166 is a wasteful number, since it uses less digits than its factorization.

50642156166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12317.

The product of its (nonzero) digits is 259200, while the sum is 42.

The spelling of 50642156166 in words is "fifty billion, six hundred forty-two million, one hundred fifty-six thousand, one hundred sixty-six".