1099977117885 has 32 divisors (see below), whose sum is σ = 2018596008960. Its totient is φ = 567730123200.

The previous prime is 1099977117857. The next prime is 1099977117887. The reversal of 1099977117885 is 5887117799901.

It is not a de Polignac number, because 1099977117885 - 2⁶ = 1099977117821 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1099977117887) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 131414826 + ... + 131423195.

It is an arithmetic number, because the mean of its divisors is an integer number (63081125280).

Almost surely, 2^{1099977117885} is an apocalyptic number.

1099977117885 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1099977117885 is a deficient number, since it is larger than the sum of its proper divisors (918618891075).

1099977117885 is a wasteful number, since it uses less digits than its factorization.

1099977117885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262838066 (or 262838060 counting only the distinct ones).

The product of its (nonzero) digits is 80015040, while the sum is 72.

The spelling of 1099977117885 in words is "one trillion, ninety-nine billion, nine hundred seventy-seven million, one hundred seventeen thousand, eight hundred eighty-five".