20164250540 has 48 divisors (see below), whose sum is σ = 48459936000. Its totient is φ = 6904066752.

The previous prime is 20164250531. The next prime is 20164250563. The reversal of 20164250540 is 4505246102.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6011 + ... + 200909.

It is an arithmetic number, because the mean of its divisors is an integer number (1009582000).

Almost surely, 2^20164250540 is an apocalyptic number.

20164250540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20164250540 is an abundant number, since it is smaller than the sum of its proper divisors (28295685460).

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

20164250540 is a wasteful number, since it uses less digits than its factorization.

20164250540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195654 (or 195652 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 29.

Adding to 20164250540 its reverse (4505246102), we get a palindrome (24669496642).

The spelling of 20164250540 in words is "twenty billion, one hundred sixty-four million, two hundred fifty thousand, five hundred forty".