79090775594 has 4 divisors (see below), whose sum is σ = 118636163394. Its totient is φ = 39545387796.

The previous prime is 79090775497. The next prime is 79090775597. The reversal of 79090775594 is 49557709097.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 68720001025 + 10370774569 = 262145^2 + 101837^2 .

It is not an unprimeable number, because it can be changed into a prime (79090775597) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19772693897 + ... + 19772693900.

Almost surely, 2^79090775594 is an apocalyptic number.

79090775594 is a deficient number, since it is larger than the sum of its proper divisors (39545387800).

79090775594 is a wasteful number, since it uses less digits than its factorization.

79090775594 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39545387799.

The product of its (nonzero) digits is 25004700, while the sum is 62.

The spelling of 79090775594 in words is "seventy-nine billion, ninety million, seven hundred seventy-five thousand, five hundred ninety-four".