12451634655 has 16 divisors (see below), whose sum is σ = 19927905120. Its totient is φ = 6639108608.

The previous prime is 12451634639. The next prime is 12451634669. The reversal of 12451634655 is 55643615421.

It is a cyclic number.

It is not a de Polignac number, because 12451634655 - 2⁴ = 12451634639 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50790 + ... + 165779.

It is an arithmetic number, because the mean of its divisors is an integer number (1245494070).

Almost surely, 2^12451634655 is an apocalyptic number.

12451634655 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12451634655 is a deficient number, since it is larger than the sum of its proper divisors (7476270465).

12451634655 is a wasteful number, since it uses less digits than its factorization.

12451634655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220410.

The product of its digits is 432000, while the sum is 42.

The spelling of 12451634655 in words is "twelve billion, four hundred fifty-one million, six hundred thirty-four thousand, six hundred fifty-five".