1363777828691 has 16 divisors (see below), whose sum is σ = 1440901677600. Its totient is φ = 1288951550208.

The previous prime is 1363777828681. The next prime is 1363777828697. The reversal of 1363777828691 is 1968287773631.

It is a cyclic number.

It is not a de Polignac number, because 1363777828691 - 2³⁴ = 1346597959507 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1363777828697) 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, 2336666 + ... + 2861391.

It is an arithmetic number, because the mean of its divisors is an integer number (90056354850).

Almost surely, 2^{1363777828691} is an apocalyptic number.

1363777828691 is a deficient number, since it is larger than the sum of its proper divisors (77123848909).

1363777828691 is a wasteful number, since it uses less digits than its factorization.

1363777828691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5198278.

The product of its digits is 128024064, while the sum is 68.

The spelling of 1363777828691 in words is "one trillion, three hundred sixty-three billion, seven hundred seventy-seven million, eight hundred twenty-eight thousand, six hundred ninety-one".