70669581536 has 72 divisors (see below), whose sum is σ = 147926466576. Its totient is φ = 33226997760.

The previous prime is 70669581481. The next prime is 70669581557. The reversal of 70669581536 is 63518596607.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13379216 + ... + 13384496.

It is an arithmetic number, because the mean of its divisors is an integer number (2054534258).

Almost surely, 2^70669581536 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 70669581536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73963233288).

70669581536 is an abundant number, since it is smaller than the sum of its proper divisors (77256885040).

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

70669581536 is a wasteful number, since it uses less digits than its factorization.

70669581536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6772 (or 6747 counting only the distinct ones).

The product of its (nonzero) digits is 8164800, while the sum is 56.

The spelling of 70669581536 in words is "seventy billion, six hundred sixty-nine million, five hundred eighty-one thousand, five hundred thirty-six".