1264907056687 has 8 divisors (see below), whose sum is σ = 1265442444000. Its totient is φ = 1264371761664.

The previous prime is 1264907056657. The next prime is 1264907056691. The reversal of 1264907056687 is 7866507094621.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1264907056687 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1264907056657) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43010814 + ... + 43040212.

It is an arithmetic number, because the mean of its divisors is an integer number (158180305500).

Almost surely, 2^{1264907056687} is an apocalyptic number.

1264907056687 is a deficient number, since it is larger than the sum of its proper divisors (535387313).

1264907056687 is a wasteful number, since it uses less digits than its factorization.

1264907056687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46145.

The product of its (nonzero) digits is 30481920, while the sum is 61.

The spelling of 1264907056687 in words is "one trillion, two hundred sixty-four billion, nine hundred seven million, fifty-six thousand, six hundred eighty-seven".