20534204361 has 16 divisors (see below), whose sum is σ = 30357574848. Its totient is φ = 12240955200.

The previous prime is 20534204351. The next prime is 20534204363. The reversal of 20534204361 is 16340243502.

It is not a de Polignac number, because 20534204361 - 2¹⁰ = 20534203337 is a prime.

It is a super-2 number, since 2×20534204361² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20534204363) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5098386 + ... + 5102411.

It is an arithmetic number, because the mean of its divisors is an integer number (1897348428).

Almost surely, 2^20534204361 is an apocalyptic number.

It is an amenable number.

20534204361 is a deficient number, since it is larger than the sum of its proper divisors (9823370487).

20534204361 is a wasteful number, since it uses less digits than its factorization.

20534204361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10200872.

The product of its (nonzero) digits is 17280, while the sum is 30.

Adding to 20534204361 its reverse (16340243502), we get a palindrome (36874447863).

The spelling of 20534204361 in words is "twenty billion, five hundred thirty-four million, two hundred four thousand, three hundred sixty-one".