77667161899 has 2 divisors, whose sum is σ = 77667161900. Its totient is φ = 77667161898.

The previous prime is 77667161893. The next prime is 77667161959. The reversal of 77667161899 is 99816176677.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 77667161899 - 2⁵ = 77667161867 is a prime.

It is not a weakly prime, because it can be changed into another prime (77667161893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38833580949 + 38833580950.

It is an arithmetic number, because the mean of its divisors is an integer number (38833580950).

Almost surely, 2^77667161899 is an apocalyptic number.

77667161899 is a deficient number, since it is larger than the sum of its proper divisors (1).

77667161899 is an equidigital number, since it uses as much as digits as its factorization.

77667161899 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48009024, while the sum is 67.

The spelling of 77667161899 in words is "seventy-seven billion, six hundred sixty-seven million, one hundred sixty-one thousand, eight hundred ninety-nine".