97531213579 has 4 divisors (see below), whose sum is σ = 97751374776. Its totient is φ = 97311052384.

The previous prime is 97531213543. The next prime is 97531213609.

97531213579 is nontrivially palindromic in base 10.

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 97531213579 - 2²¹ = 97529116427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (97531253579) 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, 110079934 + ... + 110080819.

It is an arithmetic number, because the mean of its divisors is an integer number (24437843694).

Almost surely, 2^97531213579 is an apocalyptic number.

97531213579 is a deficient number, since it is larger than the sum of its proper divisors (220161197).

97531213579 is a wasteful number, since it uses less digits than its factorization.

97531213579 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220161196.

The product of its digits is 1786050, while the sum is 52.

The spelling of 97531213579 in words is "ninety-seven billion, five hundred thirty-one million, two hundred thirteen thousand, five hundred seventy-nine".