70402835623 has 4 divisors (see below), whose sum is σ = 72830519640. Its totient is φ = 67975151608.

The previous prime is 70402835579. The next prime is 70402835651. The reversal of 70402835623 is 32653820407.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70402835623 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70402835663) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1213841965 + ... + 1213842022.

It is an arithmetic number, because the mean of its divisors is an integer number (18207629910).

Almost surely, 2^70402835623 is an apocalyptic number.

70402835623 is a deficient number, since it is larger than the sum of its proper divisors (2427684017).

70402835623 is a wasteful number, since it uses less digits than its factorization.

70402835623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2427684016.

The product of its (nonzero) digits is 241920, while the sum is 40.

The spelling of 70402835623 in words is "seventy billion, four hundred two million, eight hundred thirty-five thousand, six hundred twenty-three".