11531215054 has 8 divisors (see below), whose sum is σ = 17302740768. Its totient is φ = 5763634800.

The previous prime is 11531215043. The next prime is 11531215097. The reversal of 11531215054 is 45051213511.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent 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, 979047 + ... + 990754.

It is an arithmetic number, because the mean of its divisors is an integer number (2162842596).

Almost surely, 2^11531215054 is an apocalyptic number.

11531215054 is a deficient number, since it is larger than the sum of its proper divisors (5771525714).

11531215054 is a wasteful number, since it uses less digits than its factorization.

11531215054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1972730.

The product of its (nonzero) digits is 3000, while the sum is 28.

Adding to 11531215054 its reverse (45051213511), we get a palindrome (56582428565).

The spelling of 11531215054 in words is "eleven billion, five hundred thirty-one million, two hundred fifteen thousand, fifty-four".