79999942572052 has 6 divisors (see below), whose sum is σ = 139999899501098. Its totient is φ = 39999971286024.

The previous prime is 79999942572013. The next prime is 79999942572101. The reversal of 79999942572052 is 25027524999997.

It can be written as a sum of positive squares in only one way, i.e., 75632695250436 + 4367247321616 = 8696706^2 + 2089796^2 .

It is a super-2 number, since 2×79999942572052² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9999992821503 + ... + 9999992821510.

Almost surely, 2^{79999942572052} is an apocalyptic number.

It is an amenable number.

79999942572052 is a deficient number, since it is larger than the sum of its proper divisors (59999956929046).

79999942572052 is a wasteful number, since it uses less digits than its factorization.

79999942572052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19999985643017 (or 19999985643015 counting only the distinct ones).

The product of its (nonzero) digits is 2314720800, while the sum is 79.

The spelling of 79999942572052 in words is "seventy-nine trillion, nine hundred ninety-nine billion, nine hundred forty-two million, five hundred seventy-two thousand, fifty-two".