16945986142 has 4 divisors (see below), whose sum is σ = 25418979216. Its totient is φ = 8472993070.

The previous prime is 16945986137. The next prime is 16945986149. The reversal of 16945986142 is 24168954961.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16945986149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4236496534 + ... + 4236496537.

It is an arithmetic number, because the mean of its divisors is an integer number (6354744804).

Almost surely, 2^16945986142 is an apocalyptic number.

16945986142 is a deficient number, since it is larger than the sum of its proper divisors (8472993074).

16945986142 is an equidigital number, since it uses as much as digits as its factorization.

16945986142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8472993073.

The product of its digits is 3732480, while the sum is 55.

The spelling of 16945986142 in words is "sixteen billion, nine hundred forty-five million, nine hundred eighty-six thousand, one hundred forty-two".