11453111025521 has 16 divisors (see below), whose sum is σ = 12932758045440. Its totient is φ = 10046963028480.

The previous prime is 11453111025491. The next prime is 11453111025529. The reversal of 11453111025521 is 12552011135411.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11453111025521 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11453111025529) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10037081 + ... + 11119766.

It is an arithmetic number, because the mean of its divisors is an integer number (808297377840).

Almost surely, 2^{11453111025521} is an apocalyptic number.

11453111025521 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11453111025521 is a deficient number, since it is larger than the sum of its proper divisors (1479647019919).

11453111025521 is a wasteful number, since it uses less digits than its factorization.

11453111025521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21158584.

The product of its (nonzero) digits is 6000, while the sum is 32.

The spelling of 11453111025521 in words is "eleven trillion, four hundred fifty-three billion, one hundred eleven million, twenty-five thousand, five hundred twenty-one".