97539541251181 has 8 divisors (see below), whose sum is σ = 99644613229440. Its totient is φ = 95435709380928.

The previous prime is 97539541251157. The next prime is 97539541251223. The reversal of 97539541251181 is 18115214593579.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 97539541251181 - 2¹⁹ = 97539540726893 is a prime.

It is a super-2 number, since 2×97539541251181² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97539541251121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 309867996 + ... + 310182613.

It is an arithmetic number, because the mean of its divisors is an integer number (12455576653680).

Almost surely, 2^{97539541251181} is an apocalyptic number.

It is an amenable number.

97539541251181 is a deficient number, since it is larger than the sum of its proper divisors (2105071978259).

97539541251181 is a wasteful number, since it uses less digits than its factorization.

97539541251181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 620054003.

The product of its digits is 13608000, while the sum is 61.

The spelling of 97539541251181 in words is "ninety-seven trillion, five hundred thirty-nine billion, five hundred forty-one million, two hundred fifty-one thousand, one hundred eighty-one".