23021292492 has 72 divisors (see below), whose sum is σ = 67217269392. Its totient is φ = 6565785600.

The previous prime is 23021292491. The next prime is 23021292493. The reversal of 23021292492 is 29429212032.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (23021292491) and next prime (23021292493).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (23021292491) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 1703109 + ... + 1716572.

It is an arithmetic number, because the mean of its divisors is an integer number (933573186).

Almost surely, 2^23021292492 is an apocalyptic number.

23021292492 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

23021292492 is an abundant number, since it is smaller than the sum of its proper divisors (44195976900).

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

23021292492 is a wasteful number, since it uses less digits than its factorization.

23021292492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3419719 (or 3419714 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

It can be divided in two parts, 23021 and 292492, that added together give a palindrome (315513).

The spelling of 23021292492 in words is "twenty-three billion, twenty-one million, two hundred ninety-two thousand, four hundred ninety-two".