77826280845007 has 8 divisors (see below), whose sum is σ = 79929842474816. Its totient is φ = 75722727038112.

The previous prime is 77826280844999. The next prime is 77826280845011. The reversal of 77826280845007 is 70054808262877.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 77826280845007 - 2³ = 77826280844999 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 77826280845007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77826280842007) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22182778 + ... + 25450504.

It is an arithmetic number, because the mean of its divisors is an integer number (9991230309352).

Almost surely, 2^{77826280845007} is an apocalyptic number.

77826280845007 is a deficient number, since it is larger than the sum of its proper divisors (2103561629809).

77826280845007 is a wasteful number, since it uses less digits than its factorization.

77826280845007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3911457.

The product of its (nonzero) digits is 84295680, while the sum is 64.

The spelling of 77826280845007 in words is "seventy-seven trillion, eight hundred twenty-six billion, two hundred eighty million, eight hundred forty-five thousand, seven".