23545540651880 has 64 divisors (see below), whose sum is σ = 58266542557440. Its totient is φ = 8508764927232.

The previous prime is 23545540651861. The next prime is 23545540651891. The reversal of 23545540651880 is 8815604554532.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 481676474 + ... + 481725353.

It is an arithmetic number, because the mean of its divisors is an integer number (910414727460).

Almost surely, 2^{23545540651880} is an apocalyptic number.

23545540651880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23545540651880 is an abundant number, since it is smaller than the sum of its proper divisors (34721001905560).

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

23545540651880 is a wasteful number, since it uses less digits than its factorization.

23545540651880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 963401898 (or 963401894 counting only the distinct ones).

The product of its (nonzero) digits is 23040000, while the sum is 56.

The spelling of 23545540651880 in words is "twenty-three trillion, five hundred forty-five billion, five hundred forty million, six hundred fifty-one thousand, eight hundred eighty".