82233172978 has 32 divisors (see below), whose sum is σ = 135444374208. Its totient is φ = 37134552000.

The previous prime is 82233172961. The next prime is 82233172991. The reversal of 82233172978 is 87927133228.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3024601 + ... + 3051667.

It is an arithmetic number, because the mean of its divisors is an integer number (4232636694).

Almost surely, 2^82233172978 is an apocalyptic number.

82233172978 is a deficient number, since it is larger than the sum of its proper divisors (53211201230).

82233172978 is a wasteful number, since it uses less digits than its factorization.

82233172978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27978.

The product of its digits is 2032128, while the sum is 52.

The spelling of 82233172978 in words is "eighty-two billion, two hundred thirty-three million, one hundred seventy-two thousand, nine hundred seventy-eight".