11458438553 has 4 divisors (see below), whose sum is σ = 11466492288. Its totient is φ = 11450384820.

The previous prime is 11458438529. The next prime is 11458438561. The reversal of 11458438553 is 35583485411.

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, and also an emirpimes, since its reverse is a distinct semiprime: 35583485411 = 523 ⋅68037257.

It is a cyclic number.

It is not a de Polignac number, because 11458438553 - 2⁶ = 11458438489 is a prime.

It is a super-3 number, since 3×11458438553³ (a number of 31 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11458438498 and 11458438507.

It is not an unprimeable number, because it can be changed into a prime (11458438853) 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, 4024733 + ... + 4027578.

It is an arithmetic number, because the mean of its divisors is an integer number (2866623072).

Almost surely, 2^11458438553 is an apocalyptic number.

It is an amenable number.

11458438553 is a deficient number, since it is larger than the sum of its proper divisors (8053735).

11458438553 is an equidigital number, since it uses as much as digits as its factorization.

11458438553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8053734.

The product of its digits is 1152000, while the sum is 47.

The spelling of 11458438553 in words is "eleven billion, four hundred fifty-eight million, four hundred thirty-eight thousand, five hundred fifty-three".