20340554508 has 18 divisors (see below), whose sum is σ = 51416401764. Its totient is φ = 6780184824.

The previous prime is 20340554503. The next prime is 20340554543. The reversal of 20340554508 is 80545504302.

20340554508 is a `hidden beast` number, since 20 + 34 + 0 + 554 + 50 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 565015403 = 20340554508 / (2 + 0 + 3 + 4 + 0 + 5 + 5 + 4 + 5 + 0 + 8).

It is not an unprimeable number, because it can be changed into a prime (20340554501) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 282507666 + ... + 282507737.

Almost surely, 2^20340554508 is an apocalyptic number.

It is an amenable number.

20340554508 is an abundant number, since it is smaller than the sum of its proper divisors (31075847256).

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

20340554508 is a wasteful number, since it uses less digits than its factorization.

20340554508 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 565015413 (or 565015408 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 36.

The spelling of 20340554508 in words is "twenty billion, three hundred forty million, five hundred fifty-four thousand, five hundred eight".