20452351620 has 48 divisors (see below), whose sum is σ = 58814336448. Its totient is φ = 5306555520.

The previous prime is 20452351609. The next prime is 20452351637. The reversal of 20452351620 is 2615325402.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4604166 + ... + 4608605.

It is an arithmetic number, because the mean of its divisors is an integer number (1225298676).

Almost surely, 2^20452351620 is an apocalyptic number.

20452351620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20452351620 is an abundant number, since it is smaller than the sum of its proper divisors (38361984828).

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

20452351620 is a wasteful number, since it uses less digits than its factorization.

20452351620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9212820 (or 9212818 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 30.

The spelling of 20452351620 in words is "twenty billion, four hundred fifty-two million, three hundred fifty-one thousand, six hundred twenty".