97671997281 has 8 divisors (see below), whose sum is σ = 130231612224. Its totient is φ = 65113523600.

The previous prime is 97671997261. The next prime is 97671997309. The reversal of 97671997281 is 18279917679.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 97671997281 - 2¹⁵ = 97671964513 is a prime.

It is a super-2 number, since 2×97671997281² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (97671997211) 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, 60261 + ... + 446066.

It is an arithmetic number, because the mean of its divisors is an integer number (16278951528).

Almost surely, 2^97671997281 is an apocalyptic number.

It is an amenable number.

97671997281 is a deficient number, since it is larger than the sum of its proper divisors (32559614943).

97671997281 is a wasteful number, since it uses less digits than its factorization.

97671997281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 570631.

The product of its digits is 24004512, while the sum is 66.

The spelling of 97671997281 in words is "ninety-seven billion, six hundred seventy-one million, nine hundred ninety-seven thousand, two hundred eighty-one".