49638536920 has 64 divisors (see below), whose sum is σ = 128834945280. Its totient is φ = 16859861376.

The previous prime is 49638536873. The next prime is 49638536939. The reversal of 49638536920 is 2963583694.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 798454 + ... + 858373.

It is an arithmetic number, because the mean of its divisors is an integer number (2013046020).

Almost surely, 2^49638536920 is an apocalyptic number.

49638536920 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

49638536920 is an abundant number, since it is smaller than the sum of its proper divisors (79196408360).

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

49638536920 is a wasteful number, since it uses less digits than its factorization.

49638536920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1656952 (or 1656948 counting only the distinct ones).

The product of its (nonzero) digits is 8398080, while the sum is 55.

The spelling of 49638536920 in words is "forty-nine billion, six hundred thirty-eight million, five hundred thirty-six thousand, nine hundred twenty".