23991442550 has 12 divisors (see below), whose sum is σ = 44624083236. Its totient is φ = 9596577000.

The previous prime is 23991442543. The next prime is 23991442583. The reversal of 23991442550 is 5524419932.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 239914376 + ... + 239914475.

It is an arithmetic number, because the mean of its divisors is an integer number (3718673603).

Almost surely, 2^23991442550 is an apocalyptic number.

23991442550 is a deficient number, since it is larger than the sum of its proper divisors (20632640686).

23991442550 is a wasteful number, since it uses less digits than its factorization.

23991442550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 479828863 (or 479828858 counting only the distinct ones).

The product of its (nonzero) digits is 388800, while the sum is 44.

The spelling of 23991442550 in words is "twenty-three billion, nine hundred ninety-one million, four hundred forty-two thousand, five hundred fifty".