20465105745330 has 96 divisors (see below), whose sum is σ = 54668141661744. Its totient is φ = 5307846340608.

The previous prime is 20465105745317. The next prime is 20465105745397. The reversal of 20465105745330 is 3354750156402.

20465105745330 is a `hidden beast` number, since 2 + 0 + 4 + 6 + 5 + 105 + 7 + 4 + 533 + 0 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 6375660350049 + 14089445395281 = 2525007^2 + 3753591^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7600842 + ... + 9934938.

Almost surely, 2^{20465105745330} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20465105745330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27334070830872).

20465105745330 is an abundant number, since it is smaller than the sum of its proper divisors (34203035916414).

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

20465105745330 is a wasteful number, since it uses less digits than its factorization.

20465105745330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2336780 (or 2336777 counting only the distinct ones).

The product of its (nonzero) digits is 1512000, while the sum is 45.

The spelling of 20465105745330 in words is "twenty trillion, four hundred sixty-five billion, one hundred five million, seven hundred forty-five thousand, three hundred thirty".