22887999152640 has 320 divisors, whose sum is σ = 81313582204800. Its totient is φ = 6102452846592.

The previous prime is 22887999152569. The next prime is 22887999152653. The reversal of 22887999152640 is 4625199978822.

22887999152640 is a `hidden beast` number, since 2 + 2 + 8 + 8 + 7 + 9 + 9 + 91 + 526 + 4 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (320).

It is a super-2 number, since 2×22887999152640² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 475728906 + ... + 475777014.

It is an arithmetic number, because the mean of its divisors is an integer number (254104944390).

Almost surely, 2^{22887999152640} is an apocalyptic number.

22887999152640 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 22887999152640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40656791102400).

22887999152640 is an abundant number, since it is smaller than the sum of its proper divisors (58425583052160).

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

22887999152640 is an equidigital number, since it uses as much as digits as its factorization.

22887999152640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55024 (or 55002 counting only the distinct ones).

The product of its (nonzero) digits is 313528320, while the sum is 72.

The spelling of 22887999152640 in words is "twenty-two trillion, eight hundred eighty-seven billion, nine hundred ninety-nine million, one hundred fifty-two thousand, six hundred forty".