50638245802978 has 16 divisors (see below), whose sum is σ = 77205517515000. Its totient is φ = 24903104976000.

The previous prime is 50638245802973. The next prime is 50638245802997. The reversal of 50638245802978 is 87920854283605.

It can be written as a sum of positive squares in 4 ways, for example, as 25425464962689 + 25212780840289 = 5042367^2 + 5021233^2 .

It is not an unprimeable number, because it can be changed into a prime (50638245802973) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4703973 + ... + 11108728.

Almost surely, 2^{50638245802978} is an apocalyptic number.

50638245802978 is a deficient number, since it is larger than the sum of its proper divisors (26567271712022).

50638245802978 is a wasteful number, since it uses less digits than its factorization.

50638245802978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15839013.

The product of its (nonzero) digits is 232243200, while the sum is 67.

The spelling of 50638245802978 in words is "fifty trillion, six hundred thirty-eight billion, two hundred forty-five million, eight hundred two thousand, nine hundred seventy-eight".