97159887178 has 4 divisors (see below), whose sum is σ = 145739830770. Its totient is φ = 48579943588.

The previous prime is 97159887113. The next prime is 97159887193. The reversal of 97159887178 is 87178895179.

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., 70791648489 + 26368238689 = 266067^2 + 162383^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24289971793 + ... + 24289971796.

Almost surely, 2^97159887178 is an apocalyptic number.

97159887178 is a deficient number, since it is larger than the sum of its proper divisors (48579943592).

97159887178 is a wasteful number, since it uses less digits than its factorization.

97159887178 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48579943591.

The product of its digits is 71124480, while the sum is 70.

The spelling of 97159887178 in words is "ninety-seven billion, one hundred fifty-nine million, eight hundred eighty-seven thousand, one hundred seventy-eight".