11331400451555 has 4 divisors (see below), whose sum is σ = 13597680541872. Its totient is φ = 9065120361240.

The previous prime is 11331400451521. The next prime is 11331400451587. The reversal of 11331400451555 is 55515400413311.

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

It is not a de Polignac number, because 11331400451555 - 2²⁰ = 11331399402979 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1133140045151 + ... + 1133140045160.

It is an arithmetic number, because the mean of its divisors is an integer number (3399420135468).

Almost surely, 2^{11331400451555} is an apocalyptic number.

11331400451555 is a deficient number, since it is larger than the sum of its proper divisors (2266280090317).

11331400451555 is an equidigital number, since it uses as much as digits as its factorization.

11331400451555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2266280090316.

The product of its (nonzero) digits is 90000, while the sum is 38.

Adding to 11331400451555 its reverse (55515400413311), we get a palindrome (66846800864866).

The spelling of 11331400451555 in words is "eleven trillion, three hundred thirty-one billion, four hundred million, four hundred fifty-one thousand, five hundred fifty-five".