70111721610064 has 160 divisors (see below), whose sum is σ = 147284573184000. Its totient is φ = 32227755835392.

The previous prime is 70111721610061. The next prime is 70111721610149. The reversal of 70111721610064 is 46001612711107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70111721610061) 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, 2608406577 + ... + 2608433455.

It is an arithmetic number, because the mean of its divisors is an integer number (920528582400).

Almost surely, 2^{70111721610064} 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 70111721610064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73642286592000).

70111721610064 is an abundant number, since it is smaller than the sum of its proper divisors (77172851573936).

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

70111721610064 is a wasteful number, since it uses less digits than its factorization.

70111721610064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28725 (or 28719 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 37.

The spelling of 70111721610064 in words is "seventy trillion, one hundred eleven billion, seven hundred twenty-one million, six hundred ten thousand, sixty-four".