70649540720 has 80 divisors (see below), whose sum is σ = 188624177280. Its totient is φ = 24338592000.

The previous prime is 70649540597. The next prime is 70649540723. The reversal of 70649540720 is 2704594607.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70649540723) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2096006 + ... + 2129445.

It is an arithmetic number, because the mean of its divisors is an integer number (2357802216).

Almost surely, 2^70649540720 is an apocalyptic number.

It is an amenable number.

70649540720 is an abundant number, since it is smaller than the sum of its proper divisors (117974636560).

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

70649540720 is a wasteful number, since it uses less digits than its factorization.

70649540720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4225494 (or 4225488 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 44.

The spelling of 70649540720 in words is "seventy billion, six hundred forty-nine million, five hundred forty thousand, seven hundred twenty".