23561880141820 has 48 divisors (see below), whose sum is σ = 51193477671840. Its totient is φ = 9098458516224.

The previous prime is 23561880141749. The next prime is 23561880141829. The reversal of 23561880141820 is 2814108816532.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23561880141829) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1155307 + ... + 6961213.

It is an arithmetic number, because the mean of its divisors is an integer number (1066530784830).

Almost surely, 2^{23561880141820} is an apocalyptic number.

23561880141820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23561880141820 is an abundant number, since it is smaller than the sum of its proper divisors (27631597530020).

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

23561880141820 is a wasteful number, since it uses less digits than its factorization.

23561880141820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5812942 (or 5812940 counting only the distinct ones).

The product of its (nonzero) digits is 737280, while the sum is 49.

The spelling of 23561880141820 in words is "twenty-three trillion, five hundred sixty-one billion, eight hundred eighty million, one hundred forty-one thousand, eight hundred twenty".