23661376542 has 24 divisors (see below), whose sum is σ = 51281975160. Its totient is φ = 7884716400.

The previous prime is 23661376517. The next prime is 23661376561. The reversal of 23661376542 is 24567316632.

23661376542 is a `hidden beast` number, since 2 + 36 + 6 + 1 + 3 + 76 + 542 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 139692 + ... + 258527.

It is an arithmetic number, because the mean of its divisors is an integer number (2136748965).

Almost surely, 2^23661376542 is an apocalyptic number.

23661376542 is an abundant number, since it is smaller than the sum of its proper divisors (27620598618).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23661376542 is a wasteful number, since it uses less digits than its factorization.

23661376542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 401528 (or 401525 counting only the distinct ones).

The product of its digits is 1088640, while the sum is 45.

The spelling of 23661376542 in words is "twenty-three billion, six hundred sixty-one million, three hundred seventy-six thousand, five hundred forty-two".