16158891782 has 16 divisors (see below), whose sum is σ = 27997224912. Its totient is φ = 6912894720.

The previous prime is 16158891779. The next prime is 16158891787. The reversal of 16158891782 is 28719885161.

It is a super-2 number, since 2×16158891782² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16158891787) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21602423 + ... + 21603170.

It is an arithmetic number, because the mean of its divisors is an integer number (1749826557).

Almost surely, 2^16158891782 is an apocalyptic number.

16158891782 is a deficient number, since it is larger than the sum of its proper divisors (11838333130).

16158891782 is a wasteful number, since it uses less digits than its factorization.

16158891782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43205623.

The product of its digits is 1935360, while the sum is 56.

The spelling of 16158891782 in words is "sixteen billion, one hundred fifty-eight million, eight hundred ninety-one thousand, seven hundred eighty-two".