97797231398 has 8 divisors (see below), whose sum is σ = 146712160992. Its totient is φ = 48893177736.

The previous prime is 97797231347. The next prime is 97797231401. The reversal of 97797231398 is 89313279779.

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

It is a super-2 number, since 2×97797231398² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2696465 + ... + 2732492.

It is an arithmetic number, because the mean of its divisors is an integer number (18339020124).

Almost surely, 2^97797231398 is an apocalyptic number.

97797231398 is a deficient number, since it is larger than the sum of its proper divisors (48914929594).

97797231398 is a wasteful number, since it uses less digits than its factorization.

97797231398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5437966.

The product of its digits is 36006768, while the sum is 65.

The spelling of 97797231398 in words is "ninety-seven billion, seven hundred ninety-seven million, two hundred thirty-one thousand, three hundred ninety-eight".