97193539171 has 4 divisors (see below), whose sum is σ = 97194200512. Its totient is φ = 97192877832.

The previous prime is 97193539159. The next prime is 97193539211. The reversal of 97193539171 is 17193539179.

97193539171 is a nontrivial binomial coefficient, being equal to C(440894, 2).

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a 3-Lehmer number, since φ(97193539171) divides (97193539171-1)³.

It is a cyclic number.

It is not a de Polignac number, because 97193539171 - 2¹¹ = 97193537123 is a prime.

It is a super-2 number, since 2×97193539171² (a number of 23 digits) contains 22 as substring.

It is a deceptive number, since it divides R_97193539170.

It is not an unprimeable number, because it can be changed into a prime (97193539571) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1 + ... + 440893.

It is an arithmetic number, because the mean of its divisors is an integer number (24298550128).

Almost surely, 2^97193539171 is an apocalyptic number.

97193539171 is the 440893-rd triangular number and also the 220447-th hexagonal number.

97193539171 is the 146965-th centered nonagonal number.

97193539171 is a deficient number, since it is larger than the sum of its proper divisors (661341).

97193539171 is a wasteful number, since it uses less digits than its factorization.

97193539171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 661340.

The product of its digits is 1607445, while the sum is 55.

The spelling of 97193539171 in words is "ninety-seven billion, one hundred ninety-three million, five hundred thirty-nine thousand, one hundred seventy-one".