12019147777 has 16 divisors (see below), whose sum is σ = 14795372032. Its totient is φ = 9508000320.

The previous prime is 12019147753. The next prime is 12019147787. The reversal of 12019147777 is 77774191021.

It is a de Polignac number, because none of the positive numbers 2^k-12019147777 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12019147787) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1023463 + ... + 1035139.

It is an arithmetic number, because the mean of its divisors is an integer number (924710752).

Almost surely, 2^12019147777 is an apocalyptic number.

It is an amenable number.

12019147777 is a deficient number, since it is larger than the sum of its proper divisors (2776224255).

12019147777 is a wasteful number, since it uses less digits than its factorization.

12019147777 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23008.

The product of its (nonzero) digits is 172872, while the sum is 46.

The spelling of 12019147777 in words is "twelve billion, nineteen million, one hundred forty-seven thousand, seven hundred seventy-seven".