70699221639 has 6 divisors (see below), whose sum is σ = 102121097936. Its totient is φ = 47132814420.

The previous prime is 70699221629. The next prime is 70699221647. The reversal of 70699221639 is 93612299607.

It is not a de Polignac number, because 70699221639 - 2³³ = 62109287047 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 (70699221629) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3927734527 + ... + 3927734544.

Almost surely, 2^70699221639 is an apocalyptic number.

70699221639 is a deficient number, since it is larger than the sum of its proper divisors (31421876297).

70699221639 is a wasteful number, since it uses less digits than its factorization.

70699221639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7855469077 (or 7855469074 counting only the distinct ones).

The product of its (nonzero) digits is 2204496, while the sum is 54.

The spelling of 70699221639 in words is "seventy billion, six hundred ninety-nine million, two hundred twenty-one thousand, six hundred thirty-nine".