12511903855 has 8 divisors (see below), whose sum is σ = 16379219664. Its totient is φ = 9099566400.

The previous prime is 12511903849. The next prime is 12511903861. The reversal of 12511903855 is 55830911521.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (12511903849) and next prime (12511903861).

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

It is not a de Polignac number, because 12511903855 - 2⁷ = 12511903727 is a prime.

It is a super-2 number, since 2×12511903855² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 113744526 + ... + 113744635.

It is an arithmetic number, because the mean of its divisors is an integer number (2047402458).

Almost surely, 2^12511903855 is an apocalyptic number.

12511903855 is a deficient number, since it is larger than the sum of its proper divisors (3867315809).

12511903855 is a wasteful number, since it uses less digits than its factorization.

12511903855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227489177.

The product of its (nonzero) digits is 54000, while the sum is 40.

The spelling of 12511903855 in words is "twelve billion, five hundred eleven million, nine hundred three thousand, eight hundred fifty-five".