23123803211560 has 16 divisors (see below), whose sum is σ = 52028557226100. Its totient is φ = 9249521284608.

The previous prime is 23123803211543. The next prime is 23123803211569. The reversal of 23123803211560 is 6511230832132.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 22807444209796 + 316359001764 = 4775714^2 + 562458^2 .

It is not an unprimeable number, because it can be changed into a prime (23123803211569) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 289047540105 + ... + 289047540184.

Almost surely, 2^{23123803211560} is an apocalyptic number.

23123803211560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23123803211560 is an abundant number, since it is smaller than the sum of its proper divisors (28904754014540).

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

23123803211560 is a wasteful number, since it uses less digits than its factorization.

23123803211560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 578095080300 (or 578095080296 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 37.

The spelling of 23123803211560 in words is "twenty-three trillion, one hundred twenty-three billion, eight hundred three million, two hundred eleven thousand, five hundred sixty".