20514656384 has 32 divisors (see below), whose sum is σ = 41163099600. Its totient is φ = 10183525632.

The previous prime is 20514656377. The next prime is 20514656389. The reversal of 20514656384 is 48365641502.

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-2 number, since 2×20514656384² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20514656389) 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, 558722 + ... + 594305.

Almost surely, 2^20514656384 is an apocalyptic number.

It is an amenable number.

20514656384 is an abundant number, since it is smaller than the sum of its proper divisors (20648443216).

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

20514656384 is a wasteful number, since it uses less digits than its factorization.

20514656384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1153180 (or 1153168 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 44.

The spelling of 20514656384 in words is "twenty billion, five hundred fourteen million, six hundred fifty-six thousand, three hundred eighty-four".