20346534433 has 4 divisors (see below), whose sum is σ = 20346821680. Its totient is φ = 20346247188.

The previous prime is 20346534409. The next prime is 20346534437. The reversal of 20346534433 is 33443564302.

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, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 33443564302 = 2 ⋅16721782151.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20346534433 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20346534392 and 20346534401.

It is not an unprimeable number, because it can be changed into a prime (20346534437) 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, 46666 + ... + 207052.

It is an arithmetic number, because the mean of its divisors is an integer number (5086705420).

Almost surely, 2^20346534433 is an apocalyptic number.

It is an amenable number.

20346534433 is a deficient number, since it is larger than the sum of its proper divisors (287247).

20346534433 is a wasteful number, since it uses less digits than its factorization.

20346534433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287246.

The product of its (nonzero) digits is 311040, while the sum is 37.

The spelling of 20346534433 in words is "twenty billion, three hundred forty-six million, five hundred thirty-four thousand, four hundred thirty-three".