71177948979 has 8 divisors (see below), whose sum is σ = 99898875840. Its totient is φ = 44954494056.

The previous prime is 71177948969. The next prime is 71177948983. The reversal of 71177948979 is 97984977117.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 71177948979 - 2³⁶ = 2458472243 is a prime.

It is not an unprimeable number, because it can be changed into a prime (71177948929) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 624367917 + ... + 624368030.

It is an arithmetic number, because the mean of its divisors is an integer number (12487359480).

Almost surely, 2^71177948979 is an apocalyptic number.

71177948979 is a deficient number, since it is larger than the sum of its proper divisors (28720926861).

71177948979 is a wasteful number, since it uses less digits than its factorization.

71177948979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1248735969.

The product of its digits is 56010528, while the sum is 69.

The spelling of 71177948979 in words is "seventy-one billion, one hundred seventy-seven million, nine hundred forty-eight thousand, nine hundred seventy-nine".