49923111990 has 64 divisors (see below), whose sum is σ = 127114813440. Its totient is φ = 12512828160.

The previous prime is 49923111961. The next prime is 49923112037. The reversal of 49923111990 is 9911132994.

It is a happy number.

It is a super-2 number, since 2×49923111990² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 272431 + ... + 417210.

It is an arithmetic number, because the mean of its divisors is an integer number (1986168960).

Almost surely, 2^49923111990 is an apocalyptic number.

49923111990 is an abundant number, since it is smaller than the sum of its proper divisors (77191701450).

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

49923111990 is a wasteful number, since it uses less digits than its factorization.

49923111990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 689797.

The product of its (nonzero) digits is 157464, while the sum is 48.

The spelling of 49923111990 in words is "forty-nine billion, nine hundred twenty-three million, one hundred eleven thousand, nine hundred ninety".