20652205854 has 16 divisors (see below), whose sum is σ = 47205042048. Its totient is φ = 5900630232.

The previous prime is 20652205853. The next prime is 20652205867. The reversal of 20652205854 is 45850225602.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20652205853) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 245859552 + ... + 245859635.

It is an arithmetic number, because the mean of its divisors is an integer number (2950315128).

Almost surely, 2^20652205854 is an apocalyptic number.

20652205854 is an abundant number, since it is smaller than the sum of its proper divisors (26552836194).

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

20652205854 is a wasteful number, since it uses less digits than its factorization.

20652205854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 491719199.

The product of its (nonzero) digits is 192000, while the sum is 39.

The spelling of 20652205854 in words is "twenty billion, six hundred fifty-two million, two hundred five thousand, eight hundred fifty-four".