775375477663 has 2 divisors, whose sum is σ = 775375477664. Its totient is φ = 775375477662.

The previous prime is 775375477633. The next prime is 775375477729. The reversal of 775375477663 is 366774573577.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-775375477663 is a prime.

It is a super-2 number, since 2×775375477663² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (775375477633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 387687738831 + 387687738832.

It is an arithmetic number, because the mean of its divisors is an integer number (387687738832).

Almost surely, 2^775375477663 is an apocalyptic number.

775375477663 is a deficient number, since it is larger than the sum of its proper divisors (1).

775375477663 is an equidigital number, since it uses as much as digits as its factorization.

775375477663 is an evil number, because the sum of its binary digits is even.

The product of its digits is 544546800, while the sum is 67.

The spelling of 775375477663 in words is "seven hundred seventy-five billion, three hundred seventy-five million, four hundred seventy-seven thousand, six hundred sixty-three".