11452542521 has 8 divisors (see below), whose sum is σ = 13109044224. Its totient is φ = 9801146880.

The previous prime is 11452542509. The next prime is 11452542523. The reversal of 11452542521 is 12524525411.

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

It is not a de Polignac number, because 11452542521 - 2⁶ = 11452542457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11452542523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1271705 + ... + 1280678.

It is an arithmetic number, because the mean of its divisors is an integer number (1638630528).

Almost surely, 2^11452542521 is an apocalyptic number.

It is an amenable number.

11452542521 is a deficient number, since it is larger than the sum of its proper divisors (1656501703).

11452542521 is an equidigital number, since it uses as much as digits as its factorization.

11452542521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2553031.

The product of its digits is 16000, while the sum is 32.

The spelling of 11452542521 in words is "eleven billion, four hundred fifty-two million, five hundred forty-two thousand, five hundred twenty-one".