79754869442 has 4 divisors (see below), whose sum is σ = 119632304166. Its totient is φ = 39877434720.

The previous prime is 79754869417. The next prime is 79754869457. The reversal of 79754869442 is 24496845797.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24496845797 = 10007 ⋅2447971.

It can be written as a sum of positive squares in only one way, i.e., 67646287921 + 12108581521 = 260089^2 + 110039^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19938717359 + ... + 19938717362.

Almost surely, 2^79754869442 is an apocalyptic number.

79754869442 is a deficient number, since it is larger than the sum of its proper divisors (39877434724).

79754869442 is a wasteful number, since it uses less digits than its factorization.

79754869442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39877434723.

The product of its digits is 121927680, while the sum is 65.

The spelling of 79754869442 in words is "seventy-nine billion, seven hundred fifty-four million, eight hundred sixty-nine thousand, four hundred forty-two".