12421988465 has 8 divisors (see below), whose sum is σ = 15554490048. Its totient is φ = 9505521520.

The previous prime is 12421988459. The next prime is 12421988497. The reversal of 12421988465 is 56488912421.

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

It is not a de Polignac number, because 12421988465 - 2¹⁴ = 12421972081 is a prime.

It is a super-3 number, since 3×12421988465³ (a number of 31 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54008531 + ... + 54008760.

It is an arithmetic number, because the mean of its divisors is an integer number (1944311256).

Almost surely, 2^12421988465 is an apocalyptic number.

It is an amenable number.

12421988465 is a deficient number, since it is larger than the sum of its proper divisors (3132501583).

12421988465 is a wasteful number, since it uses less digits than its factorization.

12421988465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108017319.

The product of its digits is 1105920, while the sum is 50.

The spelling of 12421988465 in words is "twelve billion, four hundred twenty-one million, nine hundred eighty-eight thousand, four hundred sixty-five".