97643611433 has 4 divisors (see below), whose sum is σ = 103387353300. Its totient is φ = 91899869568.

The previous prime is 97643611421. The next prime is 97643611469. The reversal of 97643611433 is 33411634679.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 30724130089 + 66919481344 = 175283^2 + 258688^2 .

It is a cyclic number.

It is not a de Polignac number, because 97643611433 - 2⁶ = 97643611369 is a prime.

It is a super-4 number, since 4×97643611433⁴ (a number of 45 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (97643611133) 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, 2871870908 + ... + 2871870941.

It is an arithmetic number, because the mean of its divisors is an integer number (25846838325).

Almost surely, 2^97643611433 is an apocalyptic number.

It is an amenable number.

97643611433 is a deficient number, since it is larger than the sum of its proper divisors (5743741867).

97643611433 is a wasteful number, since it uses less digits than its factorization.

97643611433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5743741866.

The product of its digits is 979776, while the sum is 47.

The spelling of 97643611433 in words is "ninety-seven billion, six hundred forty-three million, six hundred eleven thousand, four hundred thirty-three".