20434480933 has 4 divisors (see below), whose sum is σ = 20448261568. Its totient is φ = 20420700300.

The previous prime is 20434480931. The next prime is 20434480967. The reversal of 20434480933 is 33908443402.

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 an emirpimes, since its reverse is a distinct semiprime: 33908443402 = 2 ⋅16954221701.

It is a cyclic number.

It is not a de Polignac number, because 20434480933 - 2¹ = 20434480931 is a prime.

It is a super-2 number, since 2×20434480933² (a number of 21 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 (20434480931) 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, 6888093 + ... + 6891058.

It is an arithmetic number, because the mean of its divisors is an integer number (5112065392).

Almost surely, 2^20434480933 is an apocalyptic number.

It is an amenable number.

20434480933 is a deficient number, since it is larger than the sum of its proper divisors (13780635).

20434480933 is a wasteful number, since it uses less digits than its factorization.

20434480933 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13780634.

The product of its (nonzero) digits is 248832, while the sum is 40.

The spelling of 20434480933 in words is "twenty billion, four hundred thirty-four million, four hundred eighty thousand, nine hundred thirty-three".