70173907978 has 8 divisors (see below), whose sum is σ = 105295013568. Its totient is φ = 35075570124.

The previous prime is 70173907961. The next prime is 70173908011. The reversal of 70173907978 is 87970937107.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5684226 + ... + 5696557.

It is an arithmetic number, because the mean of its divisors is an integer number (13161876696).

Almost surely, 2^70173907978 is an apocalyptic number.

70173907978 is a deficient number, since it is larger than the sum of its proper divisors (35121105590).

70173907978 is a wasteful number, since it uses less digits than its factorization.

70173907978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11383868.

The product of its (nonzero) digits is 4667544, while the sum is 58.

The spelling of 70173907978 in words is "seventy billion, one hundred seventy-three million, nine hundred seven thousand, nine hundred seventy-eight".