971565028722 has 54 divisors (see below), whose sum is σ = 2114075185677. Its totient is φ = 322473593232.

The previous prime is 971565028711. The next prime is 971565028727. The reversal of 971565028722 is 227820565179.

971565028722 is a `hidden beast` number, since 9 + 7 + 1 + 56 + 502 + 87 + 2 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 541164738321 + 430400290401 = 735639^2 + 656049^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=696981.

It is not an unprimeable number, because it can be changed into a prime (971565028727) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 1584934488 + ... + 1584935100.

Almost surely, 2^971565028722 is an apocalyptic number.

971565028722 is an abundant number, since it is smaller than the sum of its proper divisors (1142510156955).

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

971565028722 is an frugal number, since it uses more digits than its factorization.

971565028722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1992 (or 997 counting only the distinct ones).

The product of its (nonzero) digits is 4233600, while the sum is 54.

The spelling of 971565028722 in words is "nine hundred seventy-one billion, five hundred sixty-five million, twenty-eight thousand, seven hundred twenty-two".