1291811007553 has 16 divisors (see below), whose sum is σ = 1461033336960. Its totient is φ = 1131396739200.

The previous prime is 1291811007533. The next prime is 1291811007577. The reversal of 1291811007553 is 3557001181921.

It is a cyclic number.

It is not a de Polignac number, because 1291811007553 - 2⁹ = 1291811007041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1291811007533) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4284813 + ... + 4576378.

It is an arithmetic number, because the mean of its divisors is an integer number (91314583560).

Almost surely, 2^{1291811007553} is an apocalyptic number.

It is an amenable number.

1291811007553 is a deficient number, since it is larger than the sum of its proper divisors (169222329407).

1291811007553 is a wasteful number, since it uses less digits than its factorization.

1291811007553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8861688.

The product of its (nonzero) digits is 75600, while the sum is 43.

The spelling of 1291811007553 in words is "one trillion, two hundred ninety-one billion, eight hundred eleven million, seven thousand, five hundred fifty-three".