20630055258 has 48 divisors (see below), whose sum is σ = 47482749600. Its totient is φ = 6454974240.

The previous prime is 20630055253. The next prime is 20630055301. The reversal of 20630055258 is 85255003602.

It is a happy number.

20630055258 is a `hidden beast` number, since 20 + 6 + 30 + 0 + 552 + 58 = 666.

It is not an unprimeable number, because it can be changed into a prime (20630055253) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 239428 + ... + 313983.

It is an arithmetic number, because the mean of its divisors is an integer number (989223950).

Almost surely, 2^20630055258 is an apocalyptic number.

20630055258 is an abundant number, since it is smaller than the sum of its proper divisors (26852694342).

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

20630055258 is a wasteful number, since it uses less digits than its factorization.

20630055258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 553547 (or 553544 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 36.

The spelling of 20630055258 in words is "twenty billion, six hundred thirty million, fifty-five thousand, two hundred fifty-eight".