13784579190885 has 32 divisors (see below), whose sum is σ = 22534788257280. Its totient is φ = 7195353998784.

The previous prime is 13784579190881. The next prime is 13784579190887. The reversal of 13784579190885 is 58809197548731.

It is not a de Polignac number, because 13784579190885 - 2² = 13784579190881 is a prime.

It is a super-2 number, since 2×13784579190885² (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 (13784579190881) 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, 2868322 + ... + 5983011.

It is an arithmetic number, because the mean of its divisors is an integer number (704212133040).

Almost surely, 2^{13784579190885} is an apocalyptic number.

13784579190885 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13784579190885 is a deficient number, since it is larger than the sum of its proper divisors (8750209066395).

13784579190885 is an frugal number, since it uses more digits than its factorization.

13784579190885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8851482 (or 8851388 counting only the distinct ones).

The product of its (nonzero) digits is 609638400, while the sum is 75.

The spelling of 13784579190885 in words is "thirteen trillion, seven hundred eighty-four billion, five hundred seventy-nine million, one hundred ninety thousand, eight hundred eighty-five".