20147315460 has 192 divisors, whose sum is σ = 59002056960. Its totient is φ = 5132574720.

The previous prime is 20147315393. The next prime is 20147315477. The reversal of 20147315460 is 6451374102.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 49259736 + ... + 49260144.

It is an arithmetic number, because the mean of its divisors is an integer number (307302380).

Almost surely, 2^20147315460 is an apocalyptic number.

20147315460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20147315460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29501028480).

20147315460 is an abundant number, since it is smaller than the sum of its proper divisors (38854741500).

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

20147315460 is a wasteful number, since it uses less digits than its factorization.

20147315460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 838 (or 836 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 33.

Adding to 20147315460 its reverse (6451374102), we get a palindrome (26598689562).

The spelling of 20147315460 in words is "twenty billion, one hundred forty-seven million, three hundred fifteen thousand, four hundred sixty".