20145501132 has 12 divisors (see below), whose sum is σ = 47006169336. Its totient is φ = 6715167040.

The previous prime is 20145501113. The next prime is 20145501133. The reversal of 20145501132 is 23110554102.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (20145501133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 839395869 + ... + 839395892.

It is an arithmetic number, because the mean of its divisors is an integer number (3917180778).

Almost surely, 2^20145501132 is an apocalyptic number.

It is an amenable number.

20145501132 is an abundant number, since it is smaller than the sum of its proper divisors (26860668204).

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

20145501132 is a wasteful number, since it uses less digits than its factorization.

20145501132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1678791768 (or 1678791766 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 24.

The spelling of 20145501132 in words is "twenty billion, one hundred forty-five million, five hundred one thousand, one hundred thirty-two".