11452636421 has 4 divisors (see below), whose sum is σ = 11494897344. Its totient is φ = 11410375500.

The previous prime is 11452636417. The next prime is 11452636439. The reversal of 11452636421 is 12463625411.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11452636421 - 2² = 11452636417 is a prime.

It is a super-3 number, since 3×11452636421³ (a number of 31 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11452636451) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21130055 + ... + 21130596.

It is an arithmetic number, because the mean of its divisors is an integer number (2873724336).

Almost surely, 2^11452636421 is an apocalyptic number.

It is an amenable number.

11452636421 is a deficient number, since it is larger than the sum of its proper divisors (42260923).

11452636421 is an equidigital number, since it uses as much as digits as its factorization.

11452636421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42260922.

The product of its digits is 34560, while the sum is 35.

The spelling of 11452636421 in words is "eleven billion, four hundred fifty-two million, six hundred thirty-six thousand, four hundred twenty-one".