97881767198 has 16 divisors (see below), whose sum is σ = 149920329600. Its totient is φ = 47918111616.

The previous prime is 97881767189. The next prime is 97881767251. The reversal of 97881767198 is 89176718879.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2426798 + ... + 2466801.

It is an arithmetic number, because the mean of its divisors is an integer number (9370020600).

Almost surely, 2^97881767198 is an apocalyptic number.

97881767198 is a deficient number, since it is larger than the sum of its proper divisors (52038562402).

97881767198 is a wasteful number, since it uses less digits than its factorization.

97881767198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4893811.

The product of its digits is 85349376, while the sum is 71.

The spelling of 97881767198 in words is "ninety-seven billion, eight hundred eighty-one million, seven hundred sixty-seven thousand, one hundred ninety-eight".