20145453230 has 64 divisors (see below), whose sum is σ = 42968420352. Its totient is φ = 6654597120.

The previous prime is 20145453217. The next prime is 20145453239. The reversal of 20145453230 is 3235454102.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20145453193 and 20145453202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20145453239) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 472142 + ... + 513038.

It is an arithmetic number, because the mean of its divisors is an integer number (671381568).

Almost surely, 2^20145453230 is an apocalyptic number.

20145453230 is an abundant number, since it is smaller than the sum of its proper divisors (22822967122).

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

20145453230 is a wasteful number, since it uses less digits than its factorization.

20145453230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41169.

The product of its (nonzero) digits is 14400, while the sum is 29.

The spelling of 20145453230 in words is "twenty billion, one hundred forty-five million, four hundred fifty-three thousand, two hundred thirty".