70409502720 has 540 divisors, whose sum is σ = 255388357224. Its totient is φ = 18632540160.

The previous prime is 70409502679. The next prime is 70409502749. The reversal of 70409502720 is 2720590407.

It is a tau number, because it is divible by the number of its divisors (540).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 537477055 + ... + 537477185.

Almost surely, 2^70409502720 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 70409502720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (127694178612).

70409502720 is an abundant number, since it is smaller than the sum of its proper divisors (184978854504).

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

70409502720 is an frugal number, since it uses more digits than its factorization.

70409502720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188 (or 141 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 36.

The spelling of 70409502720 in words is "seventy billion, four hundred nine million, five hundred two thousand, seven hundred twenty".