23640685779282 has 128 divisors (see below), whose sum is σ = 56846504816640. Its totient is φ = 6459826464000.

The previous prime is 23640685779251. The next prime is 23640685779343. The reversal of 23640685779282 is 28297758604632.

It is a super-2 number, since 2×23640685779282² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 4859907 + ... + 8420217.

It is an arithmetic number, because the mean of its divisors is an integer number (444113318880).

Almost surely, 2^{23640685779282} is an apocalyptic number.

23640685779282 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 23640685779282, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28423252408320).

23640685779282 is an abundant number, since it is smaller than the sum of its proper divisors (33205819037358).

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

23640685779282 is a wasteful number, since it uses less digits than its factorization.

23640685779282 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3560520.

The product of its (nonzero) digits is 487710720, while the sum is 69.

The spelling of 23640685779282 in words is "twenty-three trillion, six hundred forty billion, six hundred eighty-five million, seven hundred seventy-nine thousand, two hundred eighty-two".