1290403655356 has 12 divisors (see below), whose sum is σ = 2258270351568. Its totient is φ = 645183554912.

The previous prime is 1290403655347. The next prime is 1290403655363. The reversal of 1290403655356 is 6535563040921.

It is a super-2 number, since 2×1290403655356² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4408681 + ... + 4692256.

It is an arithmetic number, because the mean of its divisors is an integer number (188189195964).

Almost surely, 2^{1290403655356} is an apocalyptic number.

It is an amenable number.

1290403655356 is a deficient number, since it is larger than the sum of its proper divisors (967866696212).

1290403655356 is a wasteful number, since it uses less digits than its factorization.

1290403655356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9136388 (or 9136386 counting only the distinct ones).

The product of its (nonzero) digits is 2916000, while the sum is 49.

The spelling of 1290403655356 in words is "one trillion, two hundred ninety billion, four hundred three million, six hundred fifty-five thousand, three hundred fifty-six".