23461566820 has 24 divisors (see below), whose sum is σ = 49599963000. Its totient is φ = 9321641472.

The previous prime is 23461566811. The next prime is 23461566857. The reversal of 23461566820 is 2866516432.

It can be written as a sum of positive squares in 4 ways, for example, as 199826496 + 23261740324 = 14136^2 + 152518^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3933525 + ... + 3939484.

It is an arithmetic number, because the mean of its divisors is an integer number (2066665125).

Almost surely, 2^23461566820 is an apocalyptic number.

23461566820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23461566820 is an abundant number, since it is smaller than the sum of its proper divisors (26138396180).

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

23461566820 is a wasteful number, since it uses less digits than its factorization.

23461566820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7873167 (or 7873165 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 43.

The spelling of 23461566820 in words is "twenty-three billion, four hundred sixty-one million, five hundred sixty-six thousand, eight hundred twenty".