22351720421376 has 240 divisors, whose sum is σ = 66777294303720. Its totient is φ = 7448968396800.

The previous prime is 22351720421357. The next prime is 22351720421453. The reversal of 22351720421376 is 67312402715322.

22351720421376 is a `hidden beast` number, since 2 + 2 + 3 + 51 + 7 + 204 + 21 + 376 = 666.

It is a super-3 number, since 3×22351720421376³ (a number of 41 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 962304675 + ... + 962327901.

Almost surely, 2^{22351720421376} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22351720421376, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33388647151860).

22351720421376 is an abundant number, since it is smaller than the sum of its proper divisors (44425573882344).

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

22351720421376 is an equidigital number, since it uses as much as digits as its factorization.

22351720421376 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29062 (or 29033 counting only the distinct ones).

The product of its (nonzero) digits is 846720, while the sum is 45.

The spelling of 22351720421376 in words is "twenty-two trillion, three hundred fifty-one billion, seven hundred twenty million, four hundred twenty-one thousand, three hundred seventy-six".