12778767190 has 32 divisors (see below), whose sum is σ = 26292432960. Its totient is φ = 4380511104.

The previous prime is 12778767149. The next prime is 12778767193. The reversal of 12778767190 is 9176787721.

It is a happy number.

It is a super-2 number, since 2×12778767190² (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 (12778767193) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 492256 + ... + 517564.

It is an arithmetic number, because the mean of its divisors is an integer number (821638530).

Almost surely, 2^12778767190 is an apocalyptic number.

12778767190 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12778767190 is an abundant number, since it is smaller than the sum of its proper divisors (13513665770).

12778767190 is a wasteful number, since it uses less digits than its factorization.

12778767190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32536.

The product of its (nonzero) digits is 2074464, while the sum is 55.

The spelling of 12778767190 in words is "twelve billion, seven hundred seventy-eight million, seven hundred sixty-seven thousand, one hundred ninety".