65536977487 has 2 divisors, whose sum is σ = 65536977488. Its totient is φ = 65536977486.

The previous prime is 65536977449. The next prime is 65536977509. The reversal of 65536977487 is 78477963556.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65536977487 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65536977587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32768488743 + 32768488744.

It is an arithmetic number, because the mean of its divisors is an integer number (32768488744).

Almost surely, 2^65536977487 is an apocalyptic number.

65536977487 is a deficient number, since it is larger than the sum of its proper divisors (1).

65536977487 is an equidigital number, since it uses as much as digits as its factorization.

65536977487 is an evil number, because the sum of its binary digits is even.

The product of its digits is 266716800, while the sum is 67.

The spelling of 65536977487 in words is "sixty-five billion, five hundred thirty-six million, nine hundred seventy-seven thousand, four hundred eighty-seven".