49778518392 has 48 divisors (see below), whose sum is σ = 134844255000. Its totient is φ = 16589462976.

The previous prime is 49778518289. The next prime is 49778518393. The reversal of 49778518392 is 29381587794.

49778518392 is a `hidden beast` number, since 49 + 7 + 78 + 518 + 3 + 9 + 2 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49778518393) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 299334 + ... + 434922.

Almost surely, 2^49778518392 is an apocalyptic number.

It is an amenable number.

49778518392 is an abundant number, since it is smaller than the sum of its proper divisors (85065736608).

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

49778518392 is a wasteful number, since it uses less digits than its factorization.

49778518392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140700 (or 140693 counting only the distinct ones).

The product of its digits is 30481920, while the sum is 63.

The spelling of 49778518392 in words is "forty-nine billion, seven hundred seventy-eight million, five hundred eighteen thousand, three hundred ninety-two".