1063449836691 has 8 divisors (see below), whose sum is σ = 1546836126144. Its totient is φ = 644515052520.

The previous prime is 1063449836681. The next prime is 1063449836707. The reversal of 1063449836691 is 1966389443601.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1063449836691 - 2²¹ = 1063447739539 is a prime.

It is a super-2 number, since 2×1063449836691² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1063449836681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16112876281 + ... + 16112876346.

It is an arithmetic number, because the mean of its divisors is an integer number (193354515768).

Almost surely, 2^{1063449836691} is an apocalyptic number.

1063449836691 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1063449836691 is a deficient number, since it is larger than the sum of its proper divisors (483386289453).

1063449836691 is a wasteful number, since it uses less digits than its factorization.

1063449836691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32225752641.

The product of its (nonzero) digits is 20155392, while the sum is 60.

The spelling of 1063449836691 in words is "one trillion, sixty-three billion, four hundred forty-nine million, eight hundred thirty-six thousand, six hundred ninety-one".