70981979328 has 126 divisors (see below), whose sum is σ = 220311758004. Its totient is φ = 21840579072.

The previous prime is 70981979303. The next prime is 70981979329. The reversal of 70981979328 is 82397918907.

It is not an unprimeable number, because it can be changed into a prime (70981979329) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 267250 + ... + 461937.

Almost surely, 2^70981979328 is an apocalyptic number.

70981979328 is a gapful number since it is divisible by the number (78) formed by its first and last digit.

It is an amenable number.

70981979328 is an abundant number, since it is smaller than the sum of its proper divisors (149329778676).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

70981979328 is a wasteful number, since it uses less digits than its factorization.

70981979328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 729231 (or 729205 counting only the distinct ones).

The product of its (nonzero) digits is 13716864, while the sum is 63.

The spelling of 70981979328 in words is "seventy billion, nine hundred eighty-one million, nine hundred seventy-nine thousand, three hundred twenty-eight".