12071281387850 has 24 divisors (see below), whose sum is σ = 22452776367840. Its totient is φ = 4828471052720.

The previous prime is 12071281387829. The next prime is 12071281387901. The reversal of 12071281387850 is 5878318217021.

It is a hoax number, since the sum of its digits (53) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 12071281387792 and 12071281387801.

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, 5210249 + ... + 7161651.

It is an arithmetic number, because the mean of its divisors is an integer number (935532348660).

Almost surely, 2^{12071281387850} is an apocalyptic number.

12071281387850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12071281387850 is a deficient number, since it is larger than the sum of its proper divisors (10381494979990).

12071281387850 is a wasteful number, since it uses less digits than its factorization.

12071281387850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2075134 (or 2075129 counting only the distinct ones).

The product of its (nonzero) digits is 1505280, while the sum is 53.

The spelling of 12071281387850 in words is "twelve trillion, seventy-one billion, two hundred eighty-one million, three hundred eighty-seven thousand, eight hundred fifty".