90912083650 has 12 divisors (see below), whose sum is σ = 169096475682. Its totient is φ = 36364833440.

The previous prime is 90912083641. The next prime is 90912083663. The reversal of 90912083650 is 5638021909.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 80197142481 + 10714941169 = 283191^2 + 103513^2 .

It is a junction number, because it is equal to n+sod(n) for n = 90912083597 and 90912083606.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 909120787 + ... + 909120886.

Almost surely, 2^90912083650 is an apocalyptic number.

90912083650 is a deficient number, since it is larger than the sum of its proper divisors (78184392032).

90912083650 is a wasteful number, since it uses less digits than its factorization.

90912083650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1818241685 (or 1818241680 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 43.

The spelling of 90912083650 in words is "ninety billion, nine hundred twelve million, eighty-three thousand, six hundred fifty".