12784155270 has 32 divisors (see below), whose sum is σ = 31511217888. Its totient is φ = 3316969728.

The previous prime is 12784155257. The next prime is 12784155283. The reversal of 12784155270 is 7255148721.

It is an interprime number because it is at equal distance from previous prime (12784155257) and next prime (12784155283).

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, 5757519 + ... + 5759738.

It is an arithmetic number, because the mean of its divisors is an integer number (984725559).

Almost surely, 2^12784155270 is an apocalyptic number.

12784155270 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12784155270 is an abundant number, since it is smaller than the sum of its proper divisors (18727062618).

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

12784155270 is a wasteful number, since it uses less digits than its factorization.

12784155270 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11517304.

The product of its (nonzero) digits is 156800, while the sum is 42.

The spelling of 12784155270 in words is "twelve billion, seven hundred eighty-four million, one hundred fifty-five thousand, two hundred seventy".