23456645661880 has 64 divisors (see below), whose sum is σ = 52993779733440. Its totient is φ = 9344255864832.

The previous prime is 23456645661797. The next prime is 23456645661913. The reversal of 23456645661880 is 8816654665432.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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, 12608712 + ... + 14348968.

It is an arithmetic number, because the mean of its divisors is an integer number (828027808335).

Almost surely, 2^{23456645661880} is an apocalyptic number.

23456645661880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23456645661880 is an abundant number, since it is smaller than the sum of its proper divisors (29537134071560).

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

23456645661880 is a wasteful number, since it uses less digits than its factorization.

23456645661880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1741648 (or 1741644 counting only the distinct ones).

The product of its (nonzero) digits is 199065600, while the sum is 64.

The spelling of 23456645661880 in words is "twenty-three trillion, four hundred fifty-six billion, six hundred forty-five million, six hundred sixty-one thousand, eight hundred eighty".