20349458820 has 96 divisors (see below), whose sum is σ = 63333795840. Its totient is φ = 5424433920.

The previous prime is 20349458797. The next prime is 20349458821. The reversal of 20349458820 is 2885494302.

20349458820 is a `hidden beast` number, since 2 + 0 + 3 + 49 + 4 + 588 + 20 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (20349458821) 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, 1825584 + ... + 1836696.

It is an arithmetic number, because the mean of its divisors is an integer number (659727040).

Almost surely, 2^20349458820 is an apocalyptic number.

20349458820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20349458820 is an abundant number, since it is smaller than the sum of its proper divisors (42984337020).

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

20349458820 is a wasteful number, since it uses less digits than its factorization.

20349458820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14522 (or 14514 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 45.

The spelling of 20349458820 in words is "twenty billion, three hundred forty-nine million, four hundred fifty-eight thousand, eight hundred twenty".