97684526018 has 4 divisors (see below), whose sum is σ = 146526789030. Its totient is φ = 48842263008.

The previous prime is 97684525957. The next prime is 97684526021. The reversal of 97684526018 is 81062548679.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 94308567409 + 3375958609 = 307097^2 + 58103^2 .

It is a super-2 number, since 2×97684526018² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24421131503 + ... + 24421131506.

Almost surely, 2^97684526018 is an apocalyptic number.

97684526018 is a deficient number, since it is larger than the sum of its proper divisors (48842263012).

97684526018 is a wasteful number, since it uses less digits than its factorization.

97684526018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48842263011.

The product of its (nonzero) digits is 5806080, while the sum is 56.

The spelling of 97684526018 in words is "ninety-seven billion, six hundred eighty-four million, five hundred twenty-six thousand, eighteen".