16778849190 has 32 divisors (see below), whose sum is σ = 40388755680. Its totient is φ = 4461080064.

The previous prime is 16778849179. The next prime is 16778849237. The reversal of 16778849190 is 9194887761.

It is a super-2 number, since 2×16778849190² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 819705 + ... + 839924.

It is an arithmetic number, because the mean of its divisors is an integer number (1262148615).

Almost surely, 2^16778849190 is an apocalyptic number.

16778849190 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16778849190 is an abundant number, since it is smaller than the sum of its proper divisors (23609906490).

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

16778849190 is a wasteful number, since it uses less digits than its factorization.

16778849190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1659976.

The product of its (nonzero) digits is 6096384, while the sum is 60.

The spelling of 16778849190 in words is "sixteen billion, seven hundred seventy-eight million, eight hundred forty-nine thousand, one hundred ninety".