20374353533 has 8 divisors (see below), whose sum is σ = 20714890752. Its totient is φ = 20036596576.

The previous prime is 20374353529. The next prime is 20374353547. The reversal of 20374353533 is 33535347302.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20374353533 - 2² = 20374353529 is a prime.

It is a super-2 number, since 2×20374353533² (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 (20374353523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 680285 + ... + 709602.

It is an arithmetic number, because the mean of its divisors is an integer number (2589361344).

Almost surely, 2^20374353533 is an apocalyptic number.

It is an amenable number.

20374353533 is a deficient number, since it is larger than the sum of its proper divisors (340537219).

20374353533 is a wasteful number, since it uses less digits than its factorization.

20374353533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1390131.

The product of its (nonzero) digits is 340200, while the sum is 38.

The spelling of 20374353533 in words is "twenty billion, three hundred seventy-four million, three hundred fifty-three thousand, five hundred thirty-three".