12151440056 has 32 divisors (see below), whose sum is σ = 26198567040. Its totient is φ = 5175806688.

The previous prime is 12151440029. The next prime is 12151440083. The reversal of 12151440056 is 65004415121.

It is an interprime number because it is at equal distance from previous prime (12151440029) and next prime (12151440083).

It is a super-2 number, since 2×12151440056² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 656486 + ... + 674741.

It is an arithmetic number, because the mean of its divisors is an integer number (818705220).

Almost surely, 2^12151440056 is an apocalyptic number.

It is an amenable number.

12151440056 is an abundant number, since it is smaller than the sum of its proper divisors (14047126984).

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

12151440056 is a wasteful number, since it uses less digits than its factorization.

12151440056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1331403 (or 1331399 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 29.

Adding to 12151440056 its reverse (65004415121), we get a palindrome (77155855177).

The spelling of 12151440056 in words is "twelve billion, one hundred fifty-one million, four hundred forty thousand, fifty-six".