70443491328 has 1008 divisors, whose sum is σ = 265716008064. Its totient is φ = 17836277760.

The previous prime is 70443491317. The next prime is 70443491389. The reversal of 70443491328 is 82319434407.

70443491328 is a `hidden beast` number, since 70 + 443 + 4 + 9 + 132 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (1008).

It is a super-2 number, since 2×70443491328² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1903878126 + ... + 1903878162.

Almost surely, 2^70443491328 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 70443491328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (132858004032).

70443491328 is an abundant number, since it is smaller than the sum of its proper divisors (195272516736).

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

70443491328 is a wasteful number, since it uses less digits than its factorization.

70443491328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131 (or 97 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 45.

The spelling of 70443491328 in words is "seventy billion, four hundred forty-three million, four hundred ninety-one thousand, three hundred twenty-eight".