12421602052640 has 192 divisors, whose sum is σ = 32352338874240. Its totient is φ = 4469212938240.

The previous prime is 12421602052547. The next prime is 12421602052723. The reversal of 12421602052640 is 4625020612421.

It is a super-2 number, since 2×12421602052640² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12421602052640.

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, 908735726 + ... + 908749394.

It is an arithmetic number, because the mean of its divisors is an integer number (168501764970).

Almost surely, 2^{12421602052640} is an apocalyptic number.

12421602052640 is a gapful number since it is divisible by the number (10) 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 12421602052640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16176169437120).

12421602052640 is an abundant number, since it is smaller than the sum of its proper divisors (19930736821600).

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

12421602052640 is a wasteful number, since it uses less digits than its factorization.

12421602052640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19115 (or 19107 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 35.

The spelling of 12421602052640 in words is "twelve trillion, four hundred twenty-one billion, six hundred two million, fifty-two thousand, six hundred forty".