17985792399442 has 32 divisors (see below), whose sum is σ = 31001862132864. Its totient is φ = 7665951974400.

The previous prime is 17985792399439. The next prime is 17985792399461. The reversal of 17985792399442 is 24499329758971.

It is a super-2 number, since 2×17985792399442² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8001192 + ... + 9999532.

It is an arithmetic number, because the mean of its divisors is an integer number (968808191652).

Almost surely, 2^{17985792399442} is an apocalyptic number.

17985792399442 is a deficient number, since it is larger than the sum of its proper divisors (13016069733422).

17985792399442 is a wasteful number, since it uses less digits than its factorization.

17985792399442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2001874.

The product of its digits is 2469035520, while the sum is 79.

The spelling of 17985792399442 in words is "seventeen trillion, nine hundred eighty-five billion, seven hundred ninety-two million, three hundred ninety-nine thousand, four hundred forty-two".