1263281874684 has 24 divisors (see below), whose sum is σ = 2950544766288. Its totient is φ = 420681521280.

The previous prime is 1263281874649. The next prime is 1263281874689. The reversal of 1263281874684 is 4864781823621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1263281874689) 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, 51541857 + ... + 51566360.

It is an arithmetic number, because the mean of its divisors is an integer number (122939365262).

Almost surely, 2^{1263281874684} is an apocalyptic number.

It is an amenable number.

1263281874684 is an abundant number, since it is smaller than the sum of its proper divisors (1687262891604).

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

1263281874684 is a wasteful number, since it uses less digits than its factorization.

1263281874684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103109245 (or 103109243 counting only the distinct ones).

The product of its digits is 24772608, while the sum is 60.

The spelling of 1263281874684 in words is "one trillion, two hundred sixty-three billion, two hundred eighty-one million, eight hundred seventy-four thousand, six hundred eighty-four".