49189053921 has 32 divisors (see below), whose sum is σ = 76422528000. Its totient is φ = 27558358464.

The previous prime is 49189053857. The next prime is 49189053959. The reversal of 49189053921 is 12935098194.

It is not a de Polignac number, because 49189053921 - 2⁶ = 49189053857 is a prime.

It is not an unprimeable number, because it can be changed into a prime (49189053521) 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, 1653646 + ... + 1683128.

It is an arithmetic number, because the mean of its divisors is an integer number (2388204000).

Almost surely, 2^49189053921 is an apocalyptic number.

It is an amenable number.

49189053921 is a deficient number, since it is larger than the sum of its proper divisors (27233474079).

49189053921 is a wasteful number, since it uses less digits than its factorization.

49189053921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31045.

The product of its (nonzero) digits is 699840, while the sum is 51.

The spelling of 49189053921 in words is "forty-nine billion, one hundred eighty-nine million, fifty-three thousand, nine hundred twenty-one".