49778642504 has 8 divisors (see below), whose sum is σ = 93334954710. Its totient is φ = 24889321248.

The previous prime is 49778642479. The next prime is 49778642513. The reversal of 49778642504 is 40524687794.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 37790582404 + 11988060100 = 194398^2 + 109490^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 49778642504.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3111165149 + ... + 3111165164.

Almost surely, 2^49778642504 is an apocalyptic number.

It is an amenable number.

49778642504 is a deficient number, since it is larger than the sum of its proper divisors (43556312206).

49778642504 is a wasteful number, since it uses less digits than its factorization.

49778642504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6222330319 (or 6222330315 counting only the distinct ones).

The product of its (nonzero) digits is 13547520, while the sum is 56.

The spelling of 49778642504 in words is "forty-nine billion, seven hundred seventy-eight million, six hundred forty-two thousand, five hundred four".