70657272040 has 128 divisors (see below), whose sum is σ = 174016926720. Its totient is φ = 25704345600.

The previous prime is 70657272031. The next prime is 70657272041. The reversal of 70657272040 is 4027275607.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 70657271984 and 70657272002.

It is not an unprimeable number, because it can be changed into a prime (70657272041) 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, 17093814 + ... + 17097946.

It is an arithmetic number, because the mean of its divisors is an integer number (1359507240).

Almost surely, 2^70657272040 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 70657272040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87008463360).

70657272040 is an abundant number, since it is smaller than the sum of its proper divisors (103359654680).

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

70657272040 is a wasteful number, since it uses less digits than its factorization.

70657272040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5003 (or 4999 counting only the distinct ones).

The product of its (nonzero) digits is 164640, while the sum is 40.

The spelling of 70657272040 in words is "seventy billion, six hundred fifty-seven million, two hundred seventy-two thousand, forty".