1290864650816 has 56 divisors (see below), whose sum is σ = 2775121460160. Its totient is φ = 592216054272.

The previous prime is 1290864650791. The next prime is 1290864650951. The reversal of 1290864650816 is 6180564680921.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4506326 + ... + 4784213.

It is an arithmetic number, because the mean of its divisors is an integer number (49555740360).

Almost surely, 2^{1290864650816} is an apocalyptic number.

1290864650816 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1290864650816 is an abundant number, since it is smaller than the sum of its proper divisors (1484256809344).

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

1290864650816 is a wasteful number, since it uses less digits than its factorization.

1290864650816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9290731 (or 9290721 counting only the distinct ones).

The product of its (nonzero) digits is 4976640, while the sum is 56.

The spelling of 1290864650816 in words is "one trillion, two hundred ninety billion, eight hundred sixty-four million, six hundred fifty thousand, eight hundred sixteen".