79007751938 has 4 divisors (see below), whose sum is σ = 118511627910. Its totient is φ = 39503875968.

The previous prime is 79007751917. The next prime is 79007751961. The reversal of 79007751938 is 83915770097.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 83915770097 = 6373 ⋅13167389.

It can be written as a sum of positive squares in only one way, i.e., 47638737169 + 31369014769 = 218263^2 + 177113^2 .

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 as a sum of consecutive naturals, namely, 19751937983 + ... + 19751937986.

Almost surely, 2^79007751938 is an apocalyptic number.

79007751938 is a deficient number, since it is larger than the sum of its proper divisors (39503875972).

79007751938 is a wasteful number, since it uses less digits than its factorization.

79007751938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39503875971.

The product of its (nonzero) digits is 3333960, while the sum is 56.

The spelling of 79007751938 in words is "seventy-nine billion, seven million, seven hundred fifty-one thousand, nine hundred thirty-eight".