10891677343981 has 24 divisors (see below), whose sum is σ = 13766965474560. Its totient is φ = 8559067305600.

The previous prime is 10891677343961. The next prime is 10891677343991. The reversal of 10891677343981 is 18934377619801.

It is a de Polignac number, because none of the positive numbers 2^k-10891677343981 is a prime.

It is a super-2 number, since 2×10891677343981² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10891677343901) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 188663100 + ... + 188720821.

It is an arithmetic number, because the mean of its divisors is an integer number (573623561440).

Almost surely, 2^{10891677343981} is an apocalyptic number.

It is an amenable number.

10891677343981 is a deficient number, since it is larger than the sum of its proper divisors (2875288130579).

10891677343981 is a wasteful number, since it uses less digits than its factorization.

10891677343981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 377383985 (or 377383978 counting only the distinct ones).

The product of its (nonzero) digits is 54867456, while the sum is 67.

The spelling of 10891677343981 in words is "ten trillion, eight hundred ninety-one billion, six hundred seventy-seven million, three hundred forty-three thousand, nine hundred eighty-one".