77036054197 has 4 divisors (see below), whose sum is σ = 77165963820. Its totient is φ = 76906144576.

The previous prime is 77036054177. The next prime is 77036054231. The reversal of 77036054197 is 79145063077.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 36511948561 + 40524105636 = 191081^2 + 201306^2 .

It is a cyclic number.

It is not a de Polignac number, because 77036054197 - 2²⁷ = 76901836469 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 77036054197.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77036054177) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64953922 + ... + 64955107.

It is an arithmetic number, because the mean of its divisors is an integer number (19291490955).

Almost surely, 2^77036054197 is an apocalyptic number.

It is an amenable number.

77036054197 is a deficient number, since it is larger than the sum of its proper divisors (129909623).

77036054197 is a wasteful number, since it uses less digits than its factorization.

77036054197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129909622.

The product of its (nonzero) digits is 1111320, while the sum is 49.

The spelling of 77036054197 in words is "seventy-seven billion, thirty-six million, fifty-four thousand, one hundred ninety-seven".