12734788550 has 24 divisors (see below), whose sum is σ = 25840044792. Its totient is φ = 4630832000.

The previous prime is 12734788529. The next prime is 12734788567. The reversal of 12734788550 is 5588743721.

It is a super-2 number, since 2×12734788550² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (50).

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, 11576531 + ... + 11577630.

It is an arithmetic number, because the mean of its divisors is an integer number (1076668533).

Almost surely, 2^12734788550 is an apocalyptic number.

12734788550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12734788550 is an abundant number, since it is smaller than the sum of its proper divisors (13105256242).

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

12734788550 is a wasteful number, since it uses less digits than its factorization.

12734788550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23154184 (or 23154179 counting only the distinct ones).

The product of its (nonzero) digits is 1881600, while the sum is 50.

The spelling of 12734788550 in words is "twelve billion, seven hundred thirty-four million, seven hundred eighty-eight thousand, five hundred fifty".