84373280777 has 4 divisors (see below), whose sum is σ = 86431165716. Its totient is φ = 82315395840.

The previous prime is 84373280711. The next prime is 84373280809. The reversal of 84373280777 is 77708237348.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 19706825161 + 64666455616 = 140381^2 + 254296^2 .

It is a cyclic number.

It is not a de Polignac number, because 84373280777 - 2¹² = 84373276681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84373280177) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1028942408 + ... + 1028942489.

It is an arithmetic number, because the mean of its divisors is an integer number (21607791429).

Almost surely, 2^84373280777 is an apocalyptic number.

It is an amenable number.

84373280777 is a deficient number, since it is larger than the sum of its proper divisors (2057884939).

84373280777 is a wasteful number, since it uses less digits than its factorization.

84373280777 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2057884938.

The product of its (nonzero) digits is 11063808, while the sum is 56.

The spelling of 84373280777 in words is "eighty-four billion, three hundred seventy-three million, two hundred eighty thousand, seven hundred seventy-seven".