1312261662372 has 24 divisors (see below), whose sum is σ = 3062275480992. Its totient is φ = 437373182400.

The previous prime is 1312261662337. The next prime is 1312261662419. The reversal of 1312261662372 is 2732661622131.

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 7 ways as a sum of consecutive naturals, for example, 5805954 + ... + 6027737.

It is an arithmetic number, because the mean of its divisors is an integer number (127594811708).

Almost surely, 2^{1312261662372} is an apocalyptic number.

1312261662372 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1312261662372 is an abundant number, since it is smaller than the sum of its proper divisors (1750013818620).

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

1312261662372 is a wasteful number, since it uses less digits than its factorization.

1312261662372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11842939 (or 11842937 counting only the distinct ones).

The product of its digits is 217728, while the sum is 42.

The spelling of 1312261662372 in words is "one trillion, three hundred twelve billion, two hundred sixty-one million, six hundred sixty-two thousand, three hundred seventy-two".