75664776767 has 2 divisors, whose sum is σ = 75664776768. Its totient is φ = 75664776766.

The previous prime is 75664776763. The next prime is 75664776793. The reversal of 75664776767 is 76767746657.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 75664776767 - 2² = 75664776763 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 75664776697 and 75664776706.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (75664776763) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37832388383 + 37832388384.

It is an arithmetic number, because the mean of its divisors is an integer number (37832388384).

Almost surely, 2^75664776767 is an apocalyptic number.

75664776767 is a deficient number, since it is larger than the sum of its proper divisors (1).

75664776767 is an equidigital number, since it uses as much as digits as its factorization.

75664776767 is an evil number, because the sum of its binary digits is even.

The product of its digits is 435637440, while the sum is 68.

The spelling of 75664776767 in words is "seventy-five billion, six hundred sixty-four million, seven hundred seventy-six thousand, seven hundred sixty-seven".