100640190982 has 4 divisors (see below), whose sum is σ = 150960286476. Its totient is φ = 50320095490.

The previous prime is 100640190947. The next prime is 100640191013. The reversal of 100640190982 is 289091046001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 289091046001 = 104393 ⋅2769257.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25160047744 + ... + 25160047747.

It is an arithmetic number, because the mean of its divisors is an integer number (37740071619).

Almost surely, 2^100640190982 is an apocalyptic number.

100640190982 is a deficient number, since it is larger than the sum of its proper divisors (50320095494).

100640190982 is an equidigital number, since it uses as much as digits as its factorization.

100640190982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50320095493.

The product of its (nonzero) digits is 31104, while the sum is 40.

The spelling of 100640190982 in words is "one hundred billion, six hundred forty million, one hundred ninety thousand, nine hundred eighty-two".