97899218571 has 48 divisors (see below), whose sum is σ = 173620081152. Its totient is φ = 47865143040.

The previous prime is 97899218533. The next prime is 97899218591. The reversal of 97899218571 is 17581299879.

It is not a de Polignac number, because 97899218571 - 2¹⁴ = 97899202187 is a prime.

It is not an unprimeable number, because it can be changed into a prime (97899218591) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1089975 + ... + 1176368.

It is an arithmetic number, because the mean of its divisors is an integer number (3617085024).

Almost surely, 2^97899218571 is an apocalyptic number.

97899218571 is a deficient number, since it is larger than the sum of its proper divisors (75720862581).

97899218571 is a wasteful number, since it uses less digits than its factorization.

97899218571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2266392 (or 2266381 counting only the distinct ones).

The product of its digits is 22861440, while the sum is 66.

The spelling of 97899218571 in words is "ninety-seven billion, eight hundred ninety-nine million, two hundred eighteen thousand, five hundred seventy-one".