49999815756 has 120 divisors (see below), whose sum is σ = 143381718480. Its totient is φ = 15067555200.

The previous prime is 49999815751. The next prime is 49999815763. The reversal of 49999815756 is 65751899994.

49999815756 is a `hidden beast` number, since 49 + 9 + 9 + 9 + 8 + 1 + 575 + 6 = 666.

It is not an unprimeable number, because it can be changed into a prime (49999815751) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 606330 + ... + 683838.

It is an arithmetic number, because the mean of its divisors is an integer number (1194847654).

Almost surely, 2^49999815756 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 49999815756, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71690859240).

49999815756 is an abundant number, since it is smaller than the sum of its proper divisors (93381902724).

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

49999815756 is a wasteful number, since it uses less digits than its factorization.

49999815756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77717 (or 77706 counting only the distinct ones).

The product of its digits is 220449600, while the sum is 72.

The spelling of 49999815756 in words is "forty-nine billion, nine hundred ninety-nine million, eight hundred fifteen thousand, seven hundred fifty-six".