776664554041023 has 16 divisors (see below), whose sum is σ = 1051729112549760. Its totient is φ = 509698776017376.

The previous prime is 776664554041007. The next prime is 776664554041063. The reversal of 776664554041023 is 320140455466677.

It is not a de Polignac number, because 776664554041023 - 2⁴ = 776664554041007 is a prime.

It is a super-2 number, since 2×776664554041023² (a number of 31 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (776664554041063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1323902340 + ... + 1324488857.

It is an arithmetic number, because the mean of its divisors is an integer number (65733069534360).

Almost surely, 2^{776664554041023} is an apocalyptic number.

776664554041023 is a deficient number, since it is larger than the sum of its proper divisors (275064558508737).

776664554041023 is a wasteful number, since it uses less digits than its factorization.

776664554041023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2648392726.

The product of its (nonzero) digits is 101606400, while the sum is 60.

The spelling of 776664554041023 in words is "seven hundred seventy-six trillion, six hundred sixty-four billion, five hundred fifty-four million, forty-one thousand, twenty-three".