13950995985 has 32 divisors (see below), whose sum is σ = 24806880000. Its totient is φ = 7438998528.

The previous prime is 13950995977. The next prime is 13950996049. The reversal of 13950995985 is 58959905931.

13950995985 is a `hidden beast` number, since 1 + 39 + 5 + 0 + 9 + 9 + 598 + 5 = 666.

It is not a de Polignac number, because 13950995985 - 2³ = 13950995977 is a prime.

It is a super-2 number, since 2×13950995985² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1004116 + ... + 1017914.

It is an arithmetic number, because the mean of its divisors is an integer number (775215000).

Almost surely, 2^13950995985 is an apocalyptic number.

13950995985 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13950995985 is a deficient number, since it is larger than the sum of its proper divisors (10855884015).

13950995985 is a wasteful number, since it uses less digits than its factorization.

13950995985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21302 (or 21296 counting only the distinct ones).

The product of its (nonzero) digits is 19683000, while the sum is 63.

The spelling of 13950995985 in words is "thirteen billion, nine hundred fifty million, nine hundred ninety-five thousand, nine hundred eighty-five".