70902070812 has 72 divisors (see below), whose sum is σ = 182230928880. Its totient is φ = 23239560960.

The previous prime is 70902070807. The next prime is 70902070819. The reversal of 70902070812 is 21807020907.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70902070819) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 829114 + ... + 910622.

Almost surely, 2^70902070812 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 70902070812, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91115464440).

70902070812 is an abundant number, since it is smaller than the sum of its proper divisors (111328858068).

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

70902070812 is a wasteful number, since it uses less digits than its factorization.

70902070812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81923 (or 81918 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 36.

The spelling of 70902070812 in words is "seventy billion, nine hundred two million, seventy thousand, eight hundred twelve".