12190527977 has 8 divisors (see below), whose sum is σ = 12957846696. Its totient is φ = 11428790272.

The previous prime is 12190527971. The next prime is 12190527983. The reversal of 12190527977 is 77972509121.

It is an interprime number because it is at equal distance from previous prime (12190527971) and next prime (12190527983).

It can be written as a sum of positive squares in 4 ways, for example, as 5858983936 + 6331544041 = 76544^2 + 79571^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12190527977 - 2⁴ = 12190527961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12190527971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1390748 + ... + 1399485.

It is an arithmetic number, because the mean of its divisors is an integer number (1619730837).

Almost surely, 2^12190527977 is an apocalyptic number.

12190527977 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

12190527977 is a deficient number, since it is larger than the sum of its proper divisors (767318719).

12190527977 is a wasteful number, since it uses less digits than its factorization.

12190527977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2790507.

The product of its (nonzero) digits is 555660, while the sum is 50.

The spelling of 12190527977 in words is "twelve billion, one hundred ninety million, five hundred twenty-seven thousand, nine hundred seventy-seven".