50164111621 has 32 divisors (see below), whose sum is σ = 56171630592. Its totient is φ = 44502816960.

The previous prime is 50164111609. The next prime is 50164111639. The reversal of 50164111621 is 12611146105.

It is a cyclic number.

It is not a de Polignac number, because 50164111621 - 2⁷ = 50164111493 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 50164111621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50164111651) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12200356 + ... + 12204466.

It is an arithmetic number, because the mean of its divisors is an integer number (1755363456).

Almost surely, 2^50164111621 is an apocalyptic number.

It is an amenable number.

50164111621 is a deficient number, since it is larger than the sum of its proper divisors (6007518971).

50164111621 is a wasteful number, since it uses less digits than its factorization.

50164111621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4513.

The product of its (nonzero) digits is 1440, while the sum is 28.

Adding to 50164111621 its reverse (12611146105), we get a palindrome (62775257726).

The spelling of 50164111621 in words is "fifty billion, one hundred sixty-four million, one hundred eleven thousand, six hundred twenty-one".