49353954021 has 16 divisors (see below), whose sum is σ = 73787771200. Its totient is φ = 32600775024.

The previous prime is 49353953989. The next prime is 49353954043. The reversal of 49353954021 is 12045935394.

49353954021 is a `hidden beast` number, since 4 + 93 + 539 + 5 + 4 + 0 + 21 = 666.

It is not a de Polignac number, because 49353954021 - 2⁵ = 49353953989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49353954061) 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, 8382031 + ... + 8387916.

It is an arithmetic number, because the mean of its divisors is an integer number (4611735700).

Almost surely, 2^49353954021 is an apocalyptic number.

It is an amenable number.

49353954021 is a deficient number, since it is larger than the sum of its proper divisors (24433817179).

49353954021 is a wasteful number, since it uses less digits than its factorization.

49353954021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16770065 (or 16770059 counting only the distinct ones).

The product of its (nonzero) digits is 583200, while the sum is 45.

The spelling of 49353954021 in words is "forty-nine billion, three hundred fifty-three million, nine hundred fifty-four thousand, twenty-one".