23978902791 has 8 divisors (see below), whose sum is σ = 32112716544. Its totient is φ = 15915512120.

The previous prime is 23978902741. The next prime is 23978902807. The reversal of 23978902791 is 19720987932.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 23978902791 - 2⁹ = 23978902279 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23978902711) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 17604975 + ... + 17606336.

It is an arithmetic number, because the mean of its divisors is an integer number (4014089568).

Almost surely, 2^23978902791 is an apocalyptic number.

23978902791 is a deficient number, since it is larger than the sum of its proper divisors (8133813753).

23978902791 is a wasteful number, since it uses less digits than its factorization.

23978902791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35211541.

The product of its (nonzero) digits is 3429216, while the sum is 57.

The spelling of 23978902791 in words is "twenty-three billion, nine hundred seventy-eight million, nine hundred two thousand, seven hundred ninety-one".