77396147201 has 2 divisors, whose sum is σ = 77396147202. Its totient is φ = 77396147200.

The previous prime is 77396147099. The next prime is 77396147219. The reversal of 77396147201 is 10274169377.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 77130620176 + 265527025 = 277724^2 + 16295^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-77396147201 is a prime.

It is not a weakly prime, because it can be changed into another prime (77396147701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38698073600 + 38698073601.

It is an arithmetic number, because the mean of its divisors is an integer number (38698073601).

Almost surely, 2^77396147201 is an apocalyptic number.

It is an amenable number.

77396147201 is a deficient number, since it is larger than the sum of its proper divisors (1).

77396147201 is an equidigital number, since it uses as much as digits as its factorization.

77396147201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 444528, while the sum is 47.

The spelling of 77396147201 in words is "seventy-seven billion, three hundred ninety-six million, one hundred forty-seven thousand, two hundred one".