977447029566 has 64 divisors (see below), whose sum is σ = 2260152253440. Its totient is φ = 276024587520.

The previous prime is 977447029561. The next prime is 977447029589. The reversal of 977447029566 is 665920744779.

It is a junction number, because it is equal to n+sod(n) for n = 977447029497 and 977447029506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (977447029561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9747415 + ... + 9847181.

It is an arithmetic number, because the mean of its divisors is an integer number (35314878960).

Almost surely, 2^977447029566 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 977447029566, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1130076126720).

977447029566 is an abundant number, since it is smaller than the sum of its proper divisors (1282705223874).

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

977447029566 is a wasteful number, since it uses less digits than its factorization.

977447029566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102489.

The product of its (nonzero) digits is 160030080, while the sum is 66.

The spelling of 977447029566 in words is "nine hundred seventy-seven billion, four hundred forty-seven million, twenty-nine thousand, five hundred sixty-six".