70768128720 has 160 divisors (see below), whose sum is σ = 226505502720. Its totient is φ = 18265927680.

The previous prime is 70768128719. The next prime is 70768128727. The reversal of 70768128720 is 2782186707.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 70768128720.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70768128727) 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, 1221366 + ... + 1277994.

It is an arithmetic number, because the mean of its divisors is an integer number (1415659392).

Almost surely, 2^70768128720 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 70768128720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (113252751360).

70768128720 is an abundant number, since it is smaller than the sum of its proper divisors (155737374000).

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

70768128720 is a wasteful number, since it uses less digits than its factorization.

70768128720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56813 (or 56807 counting only the distinct ones).

The product of its (nonzero) digits is 526848, while the sum is 48.

The spelling of 70768128720 in words is "seventy billion, seven hundred sixty-eight million, one hundred twenty-eight thousand, seven hundred twenty".