11513404454 has 4 divisors (see below), whose sum is σ = 17270106684. Its totient is φ = 5756702226.

The previous prime is 11513404453. The next prime is 11513404471. The reversal of 11513404454 is 45440431511.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 11513404454.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11513404451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2878351112 + ... + 2878351115.

It is an arithmetic number, because the mean of its divisors is an integer number (4317526671).

Almost surely, 2^11513404454 is an apocalyptic number.

11513404454 is a deficient number, since it is larger than the sum of its proper divisors (5756702230).

11513404454 is an equidigital number, since it uses as much as digits as its factorization.

11513404454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5756702229.

The product of its (nonzero) digits is 19200, while the sum is 32.

Adding to 11513404454 its reverse (45440431511), we get a palindrome (56953835965).

The spelling of 11513404454 in words is "eleven billion, five hundred thirteen million, four hundred four thousand, four hundred fifty-four".