12151111504 has 40 divisors (see below), whose sum is σ = 26943632640. Its totient is φ = 5200341888.

The previous prime is 12151111501. The next prime is 12151111513. The reversal of 12151111504 is 40511115121.

It is a super-2 number, since 2×12151111504² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12151111501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5082 + ... + 155974.

It is an arithmetic number, because the mean of its divisors is an integer number (673590816).

Almost surely, 2^12151111504 is an apocalyptic number.

12151111504 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

12151111504 is an abundant number, since it is smaller than the sum of its proper divisors (14792521136).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12151111504 is a wasteful number, since it uses less digits than its factorization.

12151111504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151627 (or 151621 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 22.

Adding to 12151111504 its reverse (40511115121), we get a palindrome (52662226625).

It can be divided in two parts, 121511 and 11504, that multiplied together give a square (1397862544 = 37388²).

The spelling of 12151111504 in words is "twelve billion, one hundred fifty-one million, one hundred eleven thousand, five hundred four".