70422820640 has 24 divisors (see below), whose sum is σ = 166373914140. Its totient is φ = 28169128192.

The previous prime is 70422820627. The next prime is 70422820651. The reversal of 70422820640 is 4602822407.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 69710784784 + 712035856 = 264028^2 + 26684^2 .

It is a super-2 number, since 2×70422820640² (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 70422820640.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 220071155 + ... + 220071474.

Almost surely, 2^70422820640 is an apocalyptic number.

It is an amenable number.

70422820640 is an abundant number, since it is smaller than the sum of its proper divisors (95951093500).

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

70422820640 is a wasteful number, since it uses less digits than its factorization.

70422820640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 440142644 (or 440142636 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 35.

The spelling of 70422820640 in words is "seventy billion, four hundred twenty-two million, eight hundred twenty thousand, six hundred forty".