239891225651 has 48 divisors (see below), whose sum is σ = 305737740000. Its totient is φ = 186124861440.

The previous prime is 239891225627. The next prime is 239891225653. The reversal of 239891225651 is 156522198932.

It is a de Polignac number, because none of the positive numbers 2^k-239891225651 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 239891225593 and 239891225602.

It is not an unprimeable number, because it can be changed into a prime (239891225653) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 186105815 + ... + 186107103.

It is an arithmetic number, because the mean of its divisors is an integer number (6369536250).

Almost surely, 2^239891225651 is an apocalyptic number.

239891225651 is a deficient number, since it is larger than the sum of its proper divisors (65846514349).

239891225651 is a wasteful number, since it uses less digits than its factorization.

239891225651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2532 (or 2525 counting only the distinct ones).

The product of its digits is 2332800, while the sum is 53.

The spelling of 239891225651 in words is "two hundred thirty-nine billion, eight hundred ninety-one million, two hundred twenty-five thousand, six hundred fifty-one".