50005451661 has 16 divisors (see below), whose sum is σ = 72741043200. Its totient is φ = 30303900720.

The previous prime is 50005451653. The next prime is 50005451677. The reversal of 50005451661 is 16615450005.

50005451661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 50005451661 - 2³ = 50005451653 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50005451621) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 410940 + ... + 518538.

It is an arithmetic number, because the mean of its divisors is an integer number (4546315200).

Almost surely, 2^50005451661 is an apocalyptic number.

It is an amenable number.

50005451661 is a deficient number, since it is larger than the sum of its proper divisors (22735591539).

50005451661 is a wasteful number, since it uses less digits than its factorization.

50005451661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121696.

The product of its (nonzero) digits is 18000, while the sum is 33.

The spelling of 50005451661 in words is "fifty billion, five million, four hundred fifty-one thousand, six hundred sixty-one".