20437565454 has 12 divisors (see below), whose sum is σ = 44281391856. Its totient is φ = 6812521812.

The previous prime is 20437565453. The next prime is 20437565521. The reversal of 20437565454 is 45456573402.

20437565454 is a `hidden beast` number, since 2 + 0 + 4 + 37 + 565 + 4 + 54 = 666.

It is a super-2 number, since 2×20437565454² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20437565453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 567710134 + ... + 567710169.

It is an arithmetic number, because the mean of its divisors is an integer number (3690115988).

Almost surely, 2^20437565454 is an apocalyptic number.

20437565454 is an abundant number, since it is smaller than the sum of its proper divisors (23843826402).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20437565454 is a wasteful number, since it uses less digits than its factorization.

20437565454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1135420311 (or 1135420308 counting only the distinct ones).

The product of its (nonzero) digits is 2016000, while the sum is 45.

The spelling of 20437565454 in words is "twenty billion, four hundred thirty-seven million, five hundred sixty-five thousand, four hundred fifty-four".