49999623912 has 72 divisors (see below), whose sum is σ = 157524336450. Its totient is φ = 14285605824.

The previous prime is 49999623857. The next prime is 49999623923. The reversal of 49999623912 is 21932699994.

It can be written as a sum of positive squares in only one way, i.e., 34197625476 + 15801998436 = 184926^2 + 125706^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 49999623912.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 7082587 + ... + 7089642.

Almost surely, 2^49999623912 is an apocalyptic number.

49999623912 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is an amenable number.

49999623912 is an abundant number, since it is smaller than the sum of its proper divisors (107524712538).

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

49999623912 is a wasteful number, since it uses less digits than its factorization.

49999623912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14172255 (or 14172241 counting only the distinct ones).

The product of its digits is 17006112, while the sum is 63.

The spelling of 49999623912 in words is "forty-nine billion, nine hundred ninety-nine million, six hundred twenty-three thousand, nine hundred twelve".