79153997775 has 24 divisors (see below), whose sum is σ = 131898415104. Its totient is φ = 41883055200.

The previous prime is 79153997753. The next prime is 79153997779. The reversal of 79153997775 is 57779935197.

It is not a de Polignac number, because 79153997775 - 2¹⁸ = 79153735631 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79153997779) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4145541 + ... + 4164590.

It is an arithmetic number, because the mean of its divisors is an integer number (5495767296).

Almost surely, 2^79153997775 is an apocalyptic number.

79153997775 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

79153997775 is a deficient number, since it is larger than the sum of its proper divisors (52744417329).

79153997775 is a wasteful number, since it uses less digits than its factorization.

79153997775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8310271 (or 8310266 counting only the distinct ones).

The product of its digits is 131274675, while the sum is 69.

The spelling of 79153997775 in words is "seventy-nine billion, one hundred fifty-three million, nine hundred ninety-seven thousand, seven hundred seventy-five".