70078908979 has 4 divisors (see below), whose sum is σ = 71972933584. Its totient is φ = 68184884376.

The previous prime is 70078908961. The next prime is 70078909009. The reversal of 70078908979 is 97980987007.

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

It is a cyclic number.

It is not a de Polignac number, because 70078908979 - 2²⁹ = 69542038067 is a prime.

It is a super-2 number, since 2×70078908979² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 70078908979.

It is not an unprimeable number, because it can be changed into a prime (70078908379) 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, 947012247 + ... + 947012320.

It is an arithmetic number, because the mean of its divisors is an integer number (17993233396).

Almost surely, 2^70078908979 is an apocalyptic number.

70078908979 is a deficient number, since it is larger than the sum of its proper divisors (1894024605).

70078908979 is a wasteful number, since it uses less digits than its factorization.

70078908979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1894024604.

The product of its (nonzero) digits is 16003008, while the sum is 64.

The spelling of 70078908979 in words is "seventy billion, seventy-eight million, nine hundred eight thousand, nine hundred seventy-nine".