72831317642 has 8 divisors (see below), whose sum is σ = 109250001696. Its totient is φ = 36414650412.

The previous prime is 72831317569. The next prime is 72831317687. The reversal of 72831317642 is 24671313827.

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

It is a junction number, because it is equal to n+sod(n) for n = 72831317593 and 72831317602.

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, 410438 + ... + 560465.

It is an arithmetic number, because the mean of its divisors is an integer number (13656250212).

Almost surely, 2^72831317642 is an apocalyptic number.

72831317642 is a deficient number, since it is larger than the sum of its proper divisors (36418684054).

72831317642 is a wasteful number, since it uses less digits than its factorization.

72831317642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1008412.

The product of its digits is 338688, while the sum is 44.

The spelling of 72831317642 in words is "seventy-two billion, eight hundred thirty-one million, three hundred seventeen thousand, six hundred forty-two".