11532340402561 has 4 divisors (see below), whose sum is σ = 12580734984624. Its totient is φ = 10483945820500.

The previous prime is 11532340402549. The next prime is 11532340402577. The reversal of 11532340402561 is 16520404323511.

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 11532340402561 - 2¹⁹ = 11532339878273 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11532340402561.

It is not an unprimeable number, because it can be changed into a prime (11532940402561) 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, 524197291015 + ... + 524197291036.

It is an arithmetic number, because the mean of its divisors is an integer number (3145183746156).

Almost surely, 2^{11532340402561} is an apocalyptic number.

11532340402561 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11532340402561 is a deficient number, since it is larger than the sum of its proper divisors (1048394582063).

11532340402561 is a wasteful number, since it uses less digits than its factorization.

11532340402561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1048394582062.

The product of its (nonzero) digits is 86400, while the sum is 37.

The spelling of 11532340402561 in words is "eleven trillion, five hundred thirty-two billion, three hundred forty million, four hundred two thousand, five hundred sixty-one".