23021292478 has 32 divisors (see below), whose sum is σ = 36714274560. Its totient is φ = 10807188480.

The previous prime is 23021292473. The next prime is 23021292479. The reversal of 23021292478 is 87429212032.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 23021292478.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23021292473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 795568 + ... + 823996.

It is an arithmetic number, because the mean of its divisors is an integer number (1147321080).

Almost surely, 2^23021292478 is an apocalyptic number.

23021292478 is a deficient number, since it is larger than the sum of its proper divisors (13692982082).

23021292478 is a wasteful number, since it uses less digits than its factorization.

23021292478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28852.

The product of its (nonzero) digits is 96768, while the sum is 40.

The spelling of 23021292478 in words is "twenty-three billion, twenty-one million, two hundred ninety-two thousand, four hundred seventy-eight".