97511493994 has 8 divisors (see below), whose sum is σ = 146270794788. Its totient is φ = 48754562400.

The previous prime is 97511493917. The next prime is 97511494001. The reversal of 97511493994 is 49939411579.

It can be written as a sum of positive squares in 2 ways, for example, as 95521174225 + 1990319769 = 309065^2 + 44613^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 485557 + ... + 656344.

Almost surely, 2^97511493994 is an apocalyptic number.

97511493994 is a deficient number, since it is larger than the sum of its proper divisors (48759300794).

97511493994 is a wasteful number, since it uses less digits than its factorization.

97511493994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1184600.

The product of its digits is 11022480, while the sum is 61.

The spelling of 97511493994 in words is "ninety-seven billion, five hundred eleven million, four hundred ninety-three thousand, nine hundred ninety-four".