142166398787944 has 32 divisors (see below), whose sum is σ = 269806981933440. Its totient is φ = 70218082297600.

The previous prime is 142166398787899. The next prime is 142166398787951. The reversal of 142166398787944 is 449787893661241.

It is a super-2 number, since 2×142166398787944² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7881712 + ... + 18613279.

It is an arithmetic number, because the mean of its divisors is an integer number (8431468185420).

Almost surely, 2^{142166398787944} is an apocalyptic number.

It is an amenable number.

142166398787944 is a deficient number, since it is larger than the sum of its proper divisors (127640583145496).

142166398787944 is a wasteful number, since it uses less digits than its factorization.

142166398787944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26503161 (or 26503157 counting only the distinct ones).

The product of its digits is 3511517184, while the sum is 79.

The spelling of 142166398787944 in words is "one hundred forty-two trillion, one hundred sixty-six billion, three hundred ninety-eight million, seven hundred eighty-seven thousand, nine hundred forty-four".