49446945920 has 64 divisors (see below), whose sum is σ = 118280426040. Its totient is φ = 19766845440.

The previous prime is 49446945883. The next prime is 49446945923. The reversal of 49446945920 is 2954964494.

It can be written as a sum of positive squares in 4 ways, for example, as 44446758976 + 5000186944 = 210824^2 + 70712^2 .

It is a tau number, because it is divible by the number of its divisors (64).

It is not an unprimeable number, because it can be changed into a prime (49446945923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1078994 + ... + 1123886.

Almost surely, 2^49446945920 is an apocalyptic number.

49446945920 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

49446945920 is an abundant number, since it is smaller than the sum of its proper divisors (68833480120).

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

49446945920 is a wasteful number, since it uses less digits than its factorization.

49446945920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46633 (or 46621 counting only the distinct ones).

The product of its (nonzero) digits is 11197440, while the sum is 56.

The spelling of 49446945920 in words is "forty-nine billion, four hundred forty-six million, nine hundred forty-five thousand, nine hundred twenty".