52157781715 has 16 divisors (see below), whose sum is σ = 68257123200. Its totient is φ = 38028961152.

The previous prime is 52157781707. The next prime is 52157781721. The reversal of 52157781715 is 51718775125.

It is a happy number.

It is not a de Polignac number, because 52157781715 - 2³ = 52157781707 is a prime.

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 in 15 ways as a sum of consecutive naturals, for example, 5073520 + ... + 5083789.

It is an arithmetic number, because the mean of its divisors is an integer number (4266070200).

Almost surely, 2^52157781715 is an apocalyptic number.

52157781715 is a deficient number, since it is larger than the sum of its proper divisors (16099341485).

52157781715 is a wasteful number, since it uses less digits than its factorization.

52157781715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10157406.

The product of its digits is 686000, while the sum is 49.

The spelling of 52157781715 in words is "fifty-two billion, one hundred fifty-seven million, seven hundred eighty-one thousand, seven hundred fifteen".