20146211620 has 48 divisors (see below), whose sum is σ = 42747264000. Its totient is φ = 7975036800.

The previous prime is 20146211611. The next prime is 20146211621. The reversal of 20146211620 is 2611264102.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (20146211621) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 799981 + ... + 824779.

It is an arithmetic number, because the mean of its divisors is an integer number (890568000).

Almost surely, 2^20146211620 is an apocalyptic number.

20146211620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20146211620 is an abundant number, since it is smaller than the sum of its proper divisors (22601052380).

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

20146211620 is a wasteful number, since it uses less digits than its factorization.

20146211620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25228 (or 25226 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 25.

Adding to 20146211620 its reverse (2611264102), we get a palindrome (22757475722).

The spelling of 20146211620 in words is "twenty billion, one hundred forty-six million, two hundred eleven thousand, six hundred twenty".