12421453645 has 8 divisors (see below), whose sum is σ = 15252389856. Its totient is φ = 9706065936.

The previous prime is 12421453619. The next prime is 12421453663. The reversal of 12421453645 is 54635412421.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12421453645 - 2⁹ = 12421453133 is a prime.

It is a super-3 number, since 3×12421453645³ (a number of 31 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28886887 + ... + 28887316.

It is an arithmetic number, because the mean of its divisors is an integer number (1906548732).

Almost surely, 2^12421453645 is an apocalyptic number.

It is an amenable number.

12421453645 is a deficient number, since it is larger than the sum of its proper divisors (2830936211).

12421453645 is an equidigital number, since it uses as much as digits as its factorization.

12421453645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57774251.

The product of its digits is 115200, while the sum is 37.

The spelling of 12421453645 in words is "twelve billion, four hundred twenty-one million, four hundred fifty-three thousand, six hundred forty-five".