77800223405 has 8 divisors (see below), whose sum is σ = 94639176312. Its totient is φ = 61387573248.

The previous prime is 77800223363. The next prime is 77800223467. The reversal of 77800223405 is 50432200877.

It can be written as a sum of positive squares in 4 ways, for example, as 33352621129 + 44447602276 = 182627^2 + 210826^2 .

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 77800223405 - 2²⁶ = 77733114541 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 106575284 + ... + 106576013.

It is an arithmetic number, because the mean of its divisors is an integer number (11829897039).

Almost surely, 2^77800223405 is an apocalyptic number.

It is an amenable number.

77800223405 is a deficient number, since it is larger than the sum of its proper divisors (16838952907).

77800223405 is a wasteful number, since it uses less digits than its factorization.

77800223405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213151375.

The product of its (nonzero) digits is 94080, while the sum is 38.

The spelling of 77800223405 in words is "seventy-seven billion, eight hundred million, two hundred twenty-three thousand, four hundred five".