76889326618477 has 2 divisors, whose sum is σ = 76889326618478. Its totient is φ = 76889326618476.

The previous prime is 76889326618393. The next prime is 76889326618513. The reversal of 76889326618477 is 77481662398867.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 60428406092041 + 16460920526436 = 7773571^2 + 4057206^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-76889326618477 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 76889326618477.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (76889326688477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38444663309238 + 38444663309239.

It is an arithmetic number, because the mean of its divisors is an integer number (38444663309239).

Almost surely, 2^{76889326618477} is an apocalyptic number.

It is an amenable number.

76889326618477 is a deficient number, since it is larger than the sum of its proper divisors (1).

76889326618477 is an equidigital number, since it uses as much as digits as its factorization.

76889326618477 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8193540096, while the sum is 82.

The spelling of 76889326618477 in words is "seventy-six trillion, eight hundred eighty-nine billion, three hundred twenty-six million, six hundred eighteen thousand, four hundred seventy-seven".