23656938542 has 4 divisors (see below), whose sum is σ = 35485407816. Its totient is φ = 11828469270.

The previous prime is 23656938533. The next prime is 23656938553. The reversal of 23656938542 is 24583965632.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5914234634 + ... + 5914234637.

It is an arithmetic number, because the mean of its divisors is an integer number (8871351954).

Almost surely, 2^23656938542 is an apocalyptic number.

23656938542 is a deficient number, since it is larger than the sum of its proper divisors (11828469274).

23656938542 is a wasteful number, since it uses less digits than its factorization.

23656938542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11828469273.

The product of its digits is 9331200, while the sum is 53.

The spelling of 23656938542 in words is "twenty-three billion, six hundred fifty-six million, nine hundred thirty-eight thousand, five hundred forty-two".