1290135394494 has 24 divisors (see below), whose sum is σ = 2800188811992. Its totient is φ = 429291984240.

The previous prime is 1290135394489. The next prime is 1290135394529. The reversal of 1290135394494 is 4944935310921.

1290135394494 is a `hidden beast` number, since 1 + 2 + 9 + 0 + 13 + 53 + 94 + 494 = 666.

It is a super-2 number, since 2×1290135394494² (a number of 25 digits) contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1290135394494.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 62751709 + ... + 62772264.

It is an arithmetic number, because the mean of its divisors is an integer number (116674533833).

Almost surely, 2^{1290135394494} is an apocalyptic number.

1290135394494 is an abundant number, since it is smaller than the sum of its proper divisors (1510053417498).

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

1290135394494 is a wasteful number, since it uses less digits than its factorization.

1290135394494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125524552 (or 125524549 counting only the distinct ones).

The product of its (nonzero) digits is 4199040, while the sum is 54.

The spelling of 1290135394494 in words is "one trillion, two hundred ninety billion, one hundred thirty-five million, three hundred ninety-four thousand, four hundred ninety-four".