90192078646 has 8 divisors (see below), whose sum is σ = 135854177760. Its totient is φ = 44907352728.

The previous prime is 90192078617. The next prime is 90192078719. The reversal of 90192078646 is 64687029109.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×90192078646² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 90192078593 and 90192078602.

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, 94342701 + ... + 94343656.

It is an arithmetic number, because the mean of its divisors is an integer number (16981772220).

Almost surely, 2^90192078646 is an apocalyptic number.

90192078646 is a deficient number, since it is larger than the sum of its proper divisors (45662099114).

90192078646 is a wasteful number, since it uses less digits than its factorization.

90192078646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188686598.

The product of its (nonzero) digits is 1306368, while the sum is 52.

The spelling of 90192078646 in words is "ninety billion, one hundred ninety-two million, seventy-eight thousand, six hundred forty-six".