97571381863 has 4 divisors (see below), whose sum is σ = 97576480008. Its totient is φ = 97566283720.

The previous prime is 97571381849. The next prime is 97571381909. The reversal of 97571381863 is 36818317579.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-97571381863 is a prime.

It is a super-3 number, since 3×97571381863³ (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 97571381798 and 97571381807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97571381363) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2520256 + ... + 2558677.

It is an arithmetic number, because the mean of its divisors is an integer number (24394120002).

Almost surely, 2^97571381863 is an apocalyptic number.

97571381863 is a deficient number, since it is larger than the sum of its proper divisors (5098145).

97571381863 is a wasteful number, since it uses less digits than its factorization.

97571381863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5098144.

The product of its digits is 7620480, while the sum is 58.

The spelling of 97571381863 in words is "ninety-seven billion, five hundred seventy-one million, three hundred eighty-one thousand, eight hundred sixty-three".