102640322894 has 8 divisors (see below), whose sum is σ = 154006548960. Its totient is φ = 51304806576.

The previous prime is 102640322881. The next prime is 102640322903. The reversal of 102640322894 is 498223046201.

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

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, 7669079 + ... + 7682450.

It is an arithmetic number, because the mean of its divisors is an integer number (19250818620).

Almost surely, 2^102640322894 is an apocalyptic number.

102640322894 is a deficient number, since it is larger than the sum of its proper divisors (51366226066).

102640322894 is a wasteful number, since it uses less digits than its factorization.

102640322894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15354874.

The product of its (nonzero) digits is 165888, while the sum is 41.

The spelling of 102640322894 in words is "one hundred two billion, six hundred forty million, three hundred twenty-two thousand, eight hundred ninety-four".