776664310546440 has 96 divisors (see below), whose sum is σ = 2548665407545920. Its totient is φ = 205099701416064.

The previous prime is 776664310546417. The next prime is 776664310546459. The reversal of 776664310546440 is 44645013466677.

It is a super-2 number, since 2×776664310546440² (a number of 31 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (63) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10472782642 + ... + 10472856801.

It is an arithmetic number, because the mean of its divisors is an integer number (26548597995270).

Almost surely, 2^{776664310546440} is an apocalyptic number.

It is an amenable number.

776664310546440 is an abundant number, since it is smaller than the sum of its proper divisors (1772001096999480).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

776664310546440 is a wasteful number, since it uses less digits than its factorization.

776664310546440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20945639563 (or 20945639556 counting only the distinct ones).

The product of its (nonzero) digits is 243855360, while the sum is 63.

The spelling of 776664310546440 in words is "seven hundred seventy-six trillion, six hundred sixty-four billion, three hundred ten million, five hundred forty-six thousand, four hundred forty".