85991316484 has 6 divisors (see below), whose sum is σ = 150484803854. Its totient is φ = 42995658240.

The previous prime is 85991316479. The next prime is 85991316487. The reversal of 85991316484 is 48461319958.

It can be written as a sum of positive squares in only one way, i.e., 62005980100 + 23985336384 = 249010^2 + 154872^2 .

It is not an unprimeable number, because it can be changed into a prime (85991316487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10748914557 + ... + 10748914564.

Almost surely, 2^85991316484 is an apocalyptic number.

It is an amenable number.

85991316484 is a deficient number, since it is larger than the sum of its proper divisors (64493487370).

85991316484 is a wasteful number, since it uses less digits than its factorization.

85991316484 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21497829125 (or 21497829123 counting only the distinct ones).

The product of its digits is 7464960, while the sum is 58.

The spelling of 85991316484 in words is "eighty-five billion, nine hundred ninety-one million, three hundred sixteen thousand, four hundred eighty-four".