12862421512 has 8 divisors (see below), whose sum is σ = 24117040350. Its totient is φ = 6431210752.

The previous prime is 12862421501. The next prime is 12862421531. The reversal of 12862421512 is 21512426821.

It can be written as a sum of positive squares in only one way, i.e., 12514001956 + 348419556 = 111866^2 + 18666^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×12862421512² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 803901337 + ... + 803901352.

Almost surely, 2^12862421512 is an apocalyptic number.

It is an amenable number.

12862421512 is a deficient number, since it is larger than the sum of its proper divisors (11254618838).

12862421512 is a wasteful number, since it uses less digits than its factorization.

12862421512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1607802695 (or 1607802691 counting only the distinct ones).

The product of its digits is 15360, while the sum is 34.

The spelling of 12862421512 in words is "twelve billion, eight hundred sixty-two million, four hundred twenty-one thousand, five hundred twelve".