90943320656 has 20 divisors (see below), whose sum is σ = 176211796500. Its totient is φ = 45469308672.

The previous prime is 90943320647. The next prime is 90943320661. The reversal of 90943320656 is 65602334909.

It can be written as a sum of positive squares in 2 ways, for example, as 30525680656 + 60417640000 = 174716^2 + 245800^2 .

It is a hoax number, since the sum of its digits (47) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 90943320656.

It is a congruent number.

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, 196370 + ... + 469518.

It is an arithmetic number, because the mean of its divisors is an integer number (8810589825).

Almost surely, 2^90943320656 is an apocalyptic number.

It is an amenable number.

90943320656 is a deficient number, since it is larger than the sum of its proper divisors (85268475844).

90943320656 is a wasteful number, since it uses less digits than its factorization.

90943320656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 293966 (or 293960 counting only the distinct ones).

The product of its (nonzero) digits is 1049760, while the sum is 47.

The spelling of 90943320656 in words is "ninety billion, nine hundred forty-three million, three hundred twenty thousand, six hundred fifty-six".