23661687272 has 32 divisors (see below), whose sum is σ = 44519217600. Its totient is φ = 11789971200.

The previous prime is 23661687239. The next prime is 23661687281. The reversal of 23661687272 is 27278616632.

It is a self number, because there is not a number n which added to its sum of digits gives 23661687272.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2878304 + ... + 2886512.

It is an arithmetic number, because the mean of its divisors is an integer number (1391225550).

Almost surely, 2^23661687272 is an apocalyptic number.

It is an amenable number.

23661687272 is a deficient number, since it is larger than the sum of its proper divisors (20857530328).

23661687272 is a wasteful number, since it uses less digits than its factorization.

23661687272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9417 (or 9413 counting only the distinct ones).

The product of its digits is 2032128, while the sum is 50.

The spelling of 23661687272 in words is "twenty-three billion, six hundred sixty-one million, six hundred eighty-seven thousand, two hundred seventy-two".