1287694252274 has 16 divisors (see below), whose sum is σ = 2048342149728. Its totient is φ = 605031339072.

The previous prime is 1287694252253. The next prime is 1287694252289. The reversal of 1287694252274 is 4722524967821.

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, 29428652 + ... + 29472375.

It is an arithmetic number, because the mean of its divisors is an integer number (128021384358).

Almost surely, 2^{1287694252274} is an apocalyptic number.

1287694252274 is a deficient number, since it is larger than the sum of its proper divisors (760647897454).

1287694252274 is a wasteful number, since it uses less digits than its factorization.

1287694252274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58901689.

The product of its digits is 27095040, while the sum is 59.

The spelling of 1287694252274 in words is "one trillion, two hundred eighty-seven billion, six hundred ninety-four million, two hundred fifty-two thousand, two hundred seventy-four".