16922978142 has 64 divisors (see below), whose sum is σ = 39368194560. Its totient is φ = 4749381504.

The previous prime is 16922978141. The next prime is 16922978147. The reversal of 16922978142 is 24187922961.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16922978141) 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, 4788208 + ... + 4791740.

It is an arithmetic number, because the mean of its divisors is an integer number (615128040).

Almost surely, 2^16922978142 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16922978142, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19684097280).

16922978142 is an abundant number, since it is smaller than the sum of its proper divisors (22445216418).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16922978142 is a wasteful number, since it uses less digits than its factorization.

16922978142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5537.

The product of its digits is 870912, while the sum is 51.

The spelling of 16922978142 in words is "sixteen billion, nine hundred twenty-two million, nine hundred seventy-eight thousand, one hundred forty-two".