97659231853 has 4 divisors (see below), whose sum is σ = 97796974780. Its totient is φ = 97521488928.

The previous prime is 97659231841. The next prime is 97659231871. The reversal of 97659231853 is 35813295679.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 35813295679 = 7 ⋅5116185097.

It can be written as a sum of positive squares in 2 ways, for example, as 3715755849 + 93943476004 = 60957^2 + 306502^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-97659231853 is a prime.

It is a super-2 number, since 2×97659231853² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97659031853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68870400 + ... + 68871817.

It is an arithmetic number, because the mean of its divisors is an integer number (24449243695).

Almost surely, 2^97659231853 is an apocalyptic number.

It is an amenable number.

97659231853 is a deficient number, since it is larger than the sum of its proper divisors (137742927).

97659231853 is a wasteful number, since it uses less digits than its factorization.

97659231853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137742926.

The product of its digits is 12247200, while the sum is 58.

The spelling of 97659231853 in words is "ninety-seven billion, six hundred fifty-nine million, two hundred thirty-one thousand, eight hundred fifty-three".