12345771270 has 32 divisors (see below), whose sum is σ = 33862687488. Its totient is φ = 2821890528.

The previous prime is 12345771253. The next prime is 12345771287. The reversal of 12345771270 is 7217754321.

It is an interprime number because it is at equal distance from previous prime (12345771253) and next prime (12345771287).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29394484 + ... + 29394903.

It is an arithmetic number, because the mean of its divisors is an integer number (1058208984).

Almost surely, 2^12345771270 is an apocalyptic number.

12345771270 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12345771270 is an abundant number, since it is smaller than the sum of its proper divisors (21516916218).

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

12345771270 is a wasteful number, since it uses less digits than its factorization.

12345771270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58789404.

The product of its (nonzero) digits is 82320, while the sum is 39.

The spelling of 12345771270 in words is "twelve billion, three hundred forty-five million, seven hundred seventy-one thousand, two hundred seventy".