97132881381 has 4 divisors (see below), whose sum is σ = 129510508512. Its totient is φ = 64755254252.

The previous prime is 97132881379. The next prime is 97132881389. The reversal of 97132881381 is 18318823179.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 97132881381 - 2¹ = 97132881379 is a prime.

It is a super-2 number, since 2×97132881381² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97132881389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16188813561 + ... + 16188813566.

It is an arithmetic number, because the mean of its divisors is an integer number (32377627128).

Almost surely, 2^97132881381 is an apocalyptic number.

It is an amenable number.

97132881381 is a deficient number, since it is larger than the sum of its proper divisors (32377627131).

97132881381 is a wasteful number, since it uses less digits than its factorization.

97132881381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32377627130.

The product of its digits is 580608, while the sum is 51.

The spelling of 97132881381 in words is "ninety-seven billion, one hundred thirty-two million, eight hundred eighty-one thousand, three hundred eighty-one".