49398720642 has 32 divisors (see below), whose sum is σ = 110180040960. Its totient is φ = 16405474320.

The previous prime is 49398720629. The next prime is 49398720661. The reversal of 49398720642 is 24602789394.

49398720642 is a `hidden beast` number, since 4 + 9 + 398 + 7 + 206 + 42 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1673173 + ... + 1702440.

It is an arithmetic number, because the mean of its divisors is an integer number (3443126280).

Almost surely, 2^49398720642 is an apocalyptic number.

49398720642 is an abundant number, since it is smaller than the sum of its proper divisors (60781320318).

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

49398720642 is a wasteful number, since it uses less digits than its factorization.

49398720642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3375895 (or 3375889 counting only the distinct ones).

The product of its (nonzero) digits is 5225472, while the sum is 54.

The spelling of 49398720642 in words is "forty-nine billion, three hundred ninety-eight million, seven hundred twenty thousand, six hundred forty-two".