52516391378 has 16 divisors (see below), whose sum is σ = 85946892480. Its totient is φ = 23868037200.

The previous prime is 52516391353. The next prime is 52516391387. The reversal of 52516391378 is 87319361525.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28388 + ... + 325328.

It is an arithmetic number, because the mean of its divisors is an integer number (5371680780).

Almost surely, 2^52516391378 is an apocalyptic number.

52516391378 is a deficient number, since it is larger than the sum of its proper divisors (33430501102).

52516391378 is a wasteful number, since it uses less digits than its factorization.

52516391378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304993.

The product of its digits is 1360800, while the sum is 50.

The spelling of 52516391378 in words is "fifty-two billion, five hundred sixteen million, three hundred ninety-one thousand, three hundred seventy-eight".