23400402266020 has 96 divisors (see below), whose sum is σ = 53256931902720. Its totient is φ = 8585366100480.

The previous prime is 23400402265957. The next prime is 23400402266023. The reversal of 23400402266020 is 2066220400432.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (23400402266023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 57351091 + ... + 57757669.

It is an arithmetic number, because the mean of its divisors is an integer number (554759707320).

Almost surely, 2^{23400402266020} is an apocalyptic number.

23400402266020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23400402266020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26628465951360).

23400402266020 is an abundant number, since it is smaller than the sum of its proper divisors (29856529636700).

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

23400402266020 is a wasteful number, since it uses less digits than its factorization.

23400402266020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 408005 (or 408003 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 31.

Adding to 23400402266020 its reverse (2066220400432), we get a palindrome (25466622666452).

The spelling of 23400402266020 in words is "twenty-three trillion, four hundred billion, four hundred two million, two hundred sixty-six thousand, twenty".