20305469124 has 60 divisors (see below), whose sum is σ = 53203796800. Its totient is φ = 6753024432.

The previous prime is 20305469117. The next prime is 20305469147. The reversal of 20305469124 is 42196450302.

It is a happy number.

20305469124 is a `hidden beast` number, since 2 + 0 + 3 + 0 + 546 + 91 + 24 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 70857 + ... + 213615.

Almost surely, 2^20305469124 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20305469124, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26601898400).

20305469124 is an abundant number, since it is smaller than the sum of its proper divisors (32898327676).

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

20305469124 is a wasteful number, since it uses less digits than its factorization.

20305469124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143214 (or 143203 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The spelling of 20305469124 in words is "twenty billion, three hundred five million, four hundred sixty-nine thousand, one hundred twenty-four".