49739773278 has 32 divisors (see below), whose sum is σ = 107144755200. Its totient is φ = 15302697696.

The previous prime is 49739773271. The next prime is 49739773309. The reversal of 49739773278 is 87237793794.

It is a Smith number, since the sum of its digits (66) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49739773271) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 702463 + ... + 770021.

It is an arithmetic number, because the mean of its divisors is an integer number (3348273600).

Almost surely, 2^49739773278 is an apocalyptic number.

49739773278 is an abundant number, since it is smaller than the sum of its proper divisors (57404981922).

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

49739773278 is a wasteful number, since it uses less digits than its factorization.

49739773278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77016.

The product of its digits is 112021056, while the sum is 66.

The spelling of 49739773278 in words is "forty-nine billion, seven hundred thirty-nine million, seven hundred seventy-three thousand, two hundred seventy-eight".