70040643402 has 32 divisors (see below), whose sum is σ = 140748739200. Its totient is φ = 23235720768.

The previous prime is 70040643397. The next prime is 70040643403. The reversal of 70040643402 is 20434604007.

It is a super-2 number, since 2×70040643402² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 70040643402.

It is not an unprimeable number, because it can be changed into a prime (70040643403) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4054299 + ... + 4071537.

It is an arithmetic number, because the mean of its divisors is an integer number (4398398100).

Almost surely, 2^70040643402 is an apocalyptic number.

70040643402 is an abundant number, since it is smaller than the sum of its proper divisors (70708095798).

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

70040643402 is a wasteful number, since it uses less digits than its factorization.

70040643402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20430.

The product of its (nonzero) digits is 16128, while the sum is 30.

The spelling of 70040643402 in words is "seventy billion, forty million, six hundred forty-three thousand, four hundred two".