23566230402 has 128 divisors (see below), whose sum is σ = 57653648640. Its totient is φ = 6325309440.

The previous prime is 23566230283. The next prime is 23566230407. The reversal of 23566230402 is 20403266532.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (23566230407) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2312374 + ... + 2322542.

It is an arithmetic number, because the mean of its divisors is an integer number (450419130).

Almost surely, 2^23566230402 is an apocalyptic number.

23566230402 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 23566230402, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28826824320).

23566230402 is an abundant number, since it is smaller than the sum of its proper divisors (34087418238).

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

23566230402 is a wasteful number, since it uses less digits than its factorization.

23566230402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10308.

The product of its (nonzero) digits is 51840, while the sum is 33.

Adding to 23566230402 its reverse (20403266532), we get a palindrome (43969496934).

The spelling of 23566230402 in words is "twenty-three billion, five hundred sixty-six million, two hundred thirty thousand, four hundred two".