12456703550 has 24 divisors (see below), whose sum is σ = 23179616856. Its totient is φ = 4980499040.

The previous prime is 12456703547. The next prime is 12456703613. The reversal of 12456703550 is 5530765421.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 63257 + ... + 170043.

It is an arithmetic number, because the mean of its divisors is an integer number (965817369).

Almost surely, 2^12456703550 is an apocalyptic number.

12456703550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12456703550 is a deficient number, since it is larger than the sum of its proper divisors (10722913306).

12456703550 is a wasteful number, since it uses less digits than its factorization.

12456703550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109132 (or 109127 counting only the distinct ones).

The product of its (nonzero) digits is 126000, while the sum is 38.

The spelling of 12456703550 in words is "twelve billion, four hundred fifty-six million, seven hundred three thousand, five hundred fifty".