12551109746 has 32 divisors (see below), whose sum is σ = 21593475072. Its totient is φ = 5359764240.

The previous prime is 12551109743. The next prime is 12551109761. The reversal of 12551109746 is 64790115521.

It is a happy number.

It is a super-2 number, since 2×12551109746² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12551109743) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8439815 + ... + 8441301.

It is an arithmetic number, because the mean of its divisors is an integer number (674796096).

Almost surely, 2^12551109746 is an apocalyptic number.

12551109746 is a deficient number, since it is larger than the sum of its proper divisors (9042365326).

12551109746 is a wasteful number, since it uses less digits than its factorization.

12551109746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3254.

The product of its (nonzero) digits is 75600, while the sum is 41.

The spelling of 12551109746 in words is "twelve billion, five hundred fifty-one million, one hundred nine thousand, seven hundred forty-six".