70439645952 has 288 divisors, whose sum is σ = 227188147200. Its totient is φ = 21397229568.

The previous prime is 70439645909. The next prime is 70439645959. The reversal of 70439645952 is 25954693407.

70439645952 is a `hidden beast` number, since 7 + 0 + 43 + 9 + 6 + 4 + 595 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (288).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (70439645959) 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, 7093663 + ... + 7103585.

Almost surely, 2^70439645952 is an apocalyptic number.

70439645952 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 70439645952, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (113594073600).

70439645952 is an abundant number, since it is smaller than the sum of its proper divisors (156748501248).

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

70439645952 is a wasteful number, since it uses less digits than its factorization.

70439645952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10040 (or 10020 counting only the distinct ones).

The product of its (nonzero) digits is 8164800, while the sum is 54.

The spelling of 70439645952 in words is "seventy billion, four hundred thirty-nine million, six hundred forty-five thousand, nine hundred fifty-two".