113213323511553 has 4 divisors (see below), whose sum is σ = 150951098015408. Its totient is φ = 75475549007700.

The previous prime is 113213323511539. The next prime is 113213323511557. The reversal of 113213323511553 is 355115323312311.

It is a happy number.

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 not a de Polignac number, because 113213323511553 - 2⁴ = 113213323511537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (113213323511557) 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, 18868887251923 + ... + 18868887251928.

It is an arithmetic number, because the mean of its divisors is an integer number (37737774503852).

Almost surely, 2^{113213323511553} is an apocalyptic number.

It is an amenable number.

113213323511553 is a deficient number, since it is larger than the sum of its proper divisors (37737774503855).

113213323511553 is an equidigital number, since it uses as much as digits as its factorization.

113213323511553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37737774503854.

The product of its digits is 121500, while the sum is 39.

Adding to 113213323511553 its reverse (355115323312311), we get a palindrome (468328646823864).

The spelling of 113213323511553 in words is "one hundred thirteen trillion, two hundred thirteen billion, three hundred twenty-three million, five hundred eleven thousand, five hundred fifty-three".