97391509693 has 4 divisors (see below), whose sum is σ = 100533171328. Its totient is φ = 94249848060.

The previous prime is 97391509597. The next prime is 97391509703. The reversal of 97391509693 is 39690519379.

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 97391509693 - 2¹⁷ = 97391378621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97391509093) 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, 1570830771 + ... + 1570830832.

It is an arithmetic number, because the mean of its divisors is an integer number (25133292832).

Almost surely, 2^97391509693 is an apocalyptic number.

It is an amenable number.

97391509693 is a deficient number, since it is larger than the sum of its proper divisors (3141661635).

97391509693 is a wasteful number, since it uses less digits than its factorization.

97391509693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3141661634.

The product of its (nonzero) digits is 12400290, while the sum is 61.

The spelling of 97391509693 in words is "ninety-seven billion, three hundred ninety-one million, five hundred nine thousand, six hundred ninety-three".