1267682516864 has 64 divisors (see below), whose sum is σ = 2635713643680. Its totient is φ = 606179481600.

The previous prime is 1267682516843. The next prime is 1267682516897. The reversal of 1267682516864 is 4686152867621.

It is a tau number, because it is divible by the number of its divisors (64).

It is a junction number, because it is equal to n+sod(n) for n = 1267682516797 and 1267682516806.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18869894 + ... + 18936954.

Almost surely, 2^{1267682516864} is an apocalyptic number.

It is an amenable number.

1267682516864 is an abundant number, since it is smaller than the sum of its proper divisors (1368031126816).

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

1267682516864 is an equidigital number, since it uses as much as digits as its factorization.

1267682516864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73519 (or 73507 counting only the distinct ones).

The product of its digits is 46448640, while the sum is 62.

The spelling of 1267682516864 in words is "one trillion, two hundred sixty-seven billion, six hundred eighty-two million, five hundred sixteen thousand, eight hundred sixty-four".