11621234453553 has 24 divisors (see below), whose sum is σ = 16915425887360. Its totient is φ = 7688044536480.

The previous prime is 11621234453539. The next prime is 11621234453579. The reversal of 11621234453553 is 35535443212611.

11621234453553 is a `hidden beast` number, since 1 + 1 + 6 + 2 + 1 + 2 + 3 + 44 + 53 + 553 = 666.

It is not a de Polignac number, because 11621234453553 - 2⁴ = 11621234453537 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11621234453499 and 11621234453508.

It is not an unprimeable number, because it can be changed into a prime (11621234453503) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6949843 + ... + 8458296.

Almost surely, 2^{11621234453553} is an apocalyptic number.

It is an amenable number.

11621234453553 is a deficient number, since it is larger than the sum of its proper divisors (5294191433807).

11621234453553 is a wasteful number, since it uses less digits than its factorization.

11621234453553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15408789 (or 15408786 counting only the distinct ones).

The product of its digits is 1296000, while the sum is 45.

The spelling of 11621234453553 in words is "eleven trillion, six hundred twenty-one billion, two hundred thirty-four million, four hundred fifty-three thousand, five hundred fifty-three".