97955128547 has 4 divisors (see below), whose sum is σ = 97956379080. Its totient is φ = 97953878016.

The previous prime is 97955128529. The next prime is 97955128553. The reversal of 97955128547 is 74582155979.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 97955128547 - 2¹² = 97955124451 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 97955128547.

It is not an unprimeable number, because it can be changed into a prime (97955128517) 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, 499313 + ... + 667250.

It is an arithmetic number, because the mean of its divisors is an integer number (24489094770).

Almost surely, 2^97955128547 is an apocalyptic number.

97955128547 is a deficient number, since it is larger than the sum of its proper divisors (1250533).

97955128547 is a wasteful number, since it uses less digits than its factorization.

97955128547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1250532.

The product of its digits is 31752000, while the sum is 62.

The spelling of 97955128547 in words is "ninety-seven billion, nine hundred fifty-five million, one hundred twenty-eight thousand, five hundred forty-seven".