70838327978 has 16 divisors (see below), whose sum is σ = 118104384096. Its totient is φ = 31591706640.

The previous prime is 70838327951. The next prime is 70838327983. The reversal of 70838327978 is 87972383807.

It is a self number, because there is not a number n which added to its sum of digits gives 70838327978.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30375476 + ... + 30377807.

It is an arithmetic number, because the mean of its divisors is an integer number (7381524006).

Almost surely, 2^70838327978 is an apocalyptic number.

70838327978 is a deficient number, since it is larger than the sum of its proper divisors (47266056118).

70838327978 is a wasteful number, since it uses less digits than its factorization.

70838327978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60753349.

The product of its (nonzero) digits is 28449792, while the sum is 62.

The spelling of 70838327978 in words is "seventy billion, eight hundred thirty-eight million, three hundred twenty-seven thousand, nine hundred seventy-eight".