137872321683 has 8 divisors (see below), whose sum is σ = 185047178496. Its totient is φ = 91306173000.

The previous prime is 137872321679. The next prime is 137872321723. The reversal of 137872321683 is 386123278731.

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

It is not a de Polignac number, because 137872321683 - 2² = 137872321679 is a prime.

It is not an unprimeable number, because it can be changed into a prime (137872320683) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 152176503 + ... + 152177408.

It is an arithmetic number, because the mean of its divisors is an integer number (23130897312).

Almost surely, 2^137872321683 is an apocalyptic number.

137872321683 is a deficient number, since it is larger than the sum of its proper divisors (47174856813).

137872321683 is a wasteful number, since it uses less digits than its factorization.

137872321683 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304354065.

The product of its digits is 2032128, while the sum is 51.

The spelling of 137872321683 in words is "one hundred thirty-seven billion, eight hundred seventy-two million, three hundred twenty-one thousand, six hundred eighty-three".