79461700247 has 4 divisors (see below), whose sum is σ = 79665972360. Its totient is φ = 79257428136.

The previous prime is 79461700189. The next prime is 79461700249. The reversal of 79461700247 is 74200716497.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74200716497 = 223 ⋅332738639.

It is a cyclic number.

It is not a de Polignac number, because 79461700247 - 2⁸ = 79461699991 is a prime.

It is a super-2 number, since 2×79461700247² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79461700249) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 102135473 + ... + 102136250.

It is an arithmetic number, because the mean of its divisors is an integer number (19916493090).

Almost surely, 2^79461700247 is an apocalyptic number.

79461700247 is a deficient number, since it is larger than the sum of its proper divisors (204272113).

79461700247 is a wasteful number, since it uses less digits than its factorization.

79461700247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204272112.

The product of its (nonzero) digits is 592704, while the sum is 47.

The spelling of 79461700247 in words is "seventy-nine billion, four hundred sixty-one million, seven hundred thousand, two hundred forty-seven".