16778381342 has 16 divisors (see below), whose sum is σ = 25851803712. Its totient is φ = 8161184160.

The previous prime is 16778381327. The next prime is 16778381351. The reversal of 16778381342 is 24318387761.

It is a happy number.

It is a congruent number.

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, 610448 + ... + 637340.

It is an arithmetic number, because the mean of its divisors is an integer number (1615737732).

Almost surely, 2^16778381342 is an apocalyptic number.

16778381342 is a deficient number, since it is larger than the sum of its proper divisors (9073422370).

16778381342 is a wasteful number, since it uses less digits than its factorization.

16778381342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35363.

The product of its digits is 1354752, while the sum is 50.

The spelling of 16778381342 in words is "sixteen billion, seven hundred seventy-eight million, three hundred eighty-one thousand, three hundred forty-two".