988406005777 has 8 divisors (see below), whose sum is σ = 998216961192. Its totient is φ = 978595536000.

The previous prime is 988406005771. The next prime is 988406005787. The reversal of 988406005777 is 777500604889.

It can be written as a sum of positive squares in 4 ways, for example, as 221877739521 + 766528266256 = 471039^2 + 875516^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-988406005777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (988406005771) 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, 5061333 + ... + 5252989.

It is an arithmetic number, because the mean of its divisors is an integer number (124777120149).

Almost surely, 2^988406005777 is an apocalyptic number.

It is an amenable number.

988406005777 is a deficient number, since it is larger than the sum of its proper divisors (9810955415).

988406005777 is a wasteful number, since it uses less digits than its factorization.

988406005777 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242819.

The product of its (nonzero) digits is 23708160, while the sum is 61.

The spelling of 988406005777 in words is "nine hundred eighty-eight billion, four hundred six million, five thousand, seven hundred seventy-seven".