97555539881 has 16 divisors (see below), whose sum is σ = 105637963200. Its totient is φ = 89776081728.

The previous prime is 97555539859. The next prime is 97555539901. The reversal of 97555539881 is 18893555579.

It is a cyclic number.

It is not a de Polignac number, because 97555539881 - 2²⁶ = 97488431017 is a prime.

It is a super-2 number, since 2×97555539881² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (97555539841) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 317750 + ... + 544128.

It is an arithmetic number, because the mean of its divisors is an integer number (6602372700).

Almost surely, 2^97555539881 is an apocalyptic number.

It is an amenable number.

97555539881 is a deficient number, since it is larger than the sum of its proper divisors (8082423319).

97555539881 is a wasteful number, since it uses less digits than its factorization.

97555539881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227048.

The product of its digits is 68040000, while the sum is 65.

The spelling of 97555539881 in words is "ninety-seven billion, five hundred fifty-five million, five hundred thirty-nine thousand, eight hundred eighty-one".