70397665536 has 288 divisors, whose sum is σ = 208559425536. Its totient is φ = 20901888000.

The previous prime is 70397665531. The next prime is 70397665579. The reversal of 70397665536 is 63556679307.

It is not an unprimeable number, because it can be changed into a prime (70397665531) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 144553485 + ... + 144553971.

It is an arithmetic number, because the mean of its divisors is an integer number (724164672).

Almost surely, 2^70397665536 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 70397665536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (104279712768).

70397665536 is an abundant number, since it is smaller than the sum of its proper divisors (138161760000).

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

70397665536 is a wasteful number, since it uses less digits than its factorization.

70397665536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 829 (or 815 counting only the distinct ones).

The product of its (nonzero) digits is 21432600, while the sum is 57.

The spelling of 70397665536 in words is "seventy billion, three hundred ninety-seven million, six hundred sixty-five thousand, five hundred thirty-six".