23947485442 has 4 divisors (see below), whose sum is σ = 35921228166. Its totient is φ = 11973742720.

The previous prime is 23947485439. The next prime is 23947485467. The reversal of 23947485442 is 24458474932.

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

It can be written as a sum of positive squares in only one way, i.e., 19399196961 + 4548288481 = 139281^2 + 67441^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 23947485442.

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, 5986871359 + ... + 5986871362.

Almost surely, 2^23947485442 is an apocalyptic number.

23947485442 is a deficient number, since it is larger than the sum of its proper divisors (11973742724).

23947485442 is a wasteful number, since it uses less digits than its factorization.

23947485442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11973742723.

The product of its digits is 7741440, while the sum is 52.

The spelling of 23947485442 in words is "twenty-three billion, nine hundred forty-seven million, four hundred eighty-five thousand, four hundred forty-two".