70656656240 has 80 divisors (see below), whose sum is σ = 167065929120. Its totient is φ = 27783336960.

The previous prime is 70656656233. The next prime is 70656656251. The reversal of 70656656240 is 4265665607.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12036026 + ... + 12041894.

It is an arithmetic number, because the mean of its divisors is an integer number (2088324114).

Almost surely, 2^70656656240 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 70656656240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83532964560).

70656656240 is an abundant number, since it is smaller than the sum of its proper divisors (96409272880).

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

70656656240 is a wasteful number, since it uses less digits than its factorization.

70656656240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8410 (or 8404 counting only the distinct ones).

The product of its (nonzero) digits is 1814400, while the sum is 47.

The spelling of 70656656240 in words is "seventy billion, six hundred fifty-six million, six hundred fifty-six thousand, two hundred forty".