49984771820 has 12 divisors (see below), whose sum is σ = 104968020864. Its totient is φ = 19993908720.

The previous prime is 49984771799. The next prime is 49984771927. The reversal of 49984771820 is 2817748994.

It is a super-2 number, since 2×49984771820² (a number of 22 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (59) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 49984771820.

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 3 ways as a sum of consecutive naturals, for example, 1249619276 + ... + 1249619315.

It is an arithmetic number, because the mean of its divisors is an integer number (8747335072).

Almost surely, 2^49984771820 is an apocalyptic number.

It is an amenable number.

49984771820 is an abundant number, since it is smaller than the sum of its proper divisors (54983249044).

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

49984771820 is a wasteful number, since it uses less digits than its factorization.

49984771820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2499238600 (or 2499238598 counting only the distinct ones).

The product of its (nonzero) digits is 8128512, while the sum is 59.

The spelling of 49984771820 in words is "forty-nine billion, nine hundred eighty-four million, seven hundred seventy-one thousand, eight hundred twenty".