97807405357 has 4 divisors (see below), whose sum is σ = 97808202396. Its totient is φ = 97806608320.

The previous prime is 97807405351. The next prime is 97807405391. The reversal of 97807405357 is 75350470879.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 75350470879 = 4339 ⋅17365861.

It can be written as a sum of positive squares in 2 ways, for example, as 54768168676 + 43039236681 = 234026^2 + 207459^2 .

It is a cyclic number.

It is not a de Polignac number, because 97807405357 - 2³ = 97807405349 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 97807405298 and 97807405307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97807405351) 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, 171244 + ... + 474277.

It is an arithmetic number, because the mean of its divisors is an integer number (24452050599).

Almost surely, 2^97807405357 is an apocalyptic number.

It is an amenable number.

97807405357 is a deficient number, since it is larger than the sum of its proper divisors (797039).

97807405357 is a wasteful number, since it uses less digits than its factorization.

97807405357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 797038.

The product of its (nonzero) digits is 7408800, while the sum is 55.

The spelling of 97807405357 in words is "ninety-seven billion, eight hundred seven million, four hundred five thousand, three hundred fifty-seven".