20145022000 has 80 divisors (see below), whose sum is σ = 49898931264. Its totient is φ = 7861440000.

The previous prime is 20145021979. The next prime is 20145022019. The reversal of 20145022000 is 22054102.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×20145022000² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (16).

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, 40836 + ... + 204835.

Almost surely, 2^20145022000 is an apocalyptic number.

20145022000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20145022000 is an abundant number, since it is smaller than the sum of its proper divisors (29753909264).

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

20145022000 is a wasteful number, since it uses less digits than its factorization.

20145022000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245735 (or 245719 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 16.

Adding to 20145022000 its reverse (22054102), we get a palindrome (20167076102).

The spelling of 20145022000 in words is "twenty billion, one hundred forty-five million, twenty-two thousand".