20671530120 has 96 divisors (see below), whose sum is σ = 71134404120. Its totient is φ = 5188147200.

The previous prime is 20671530109. The next prime is 20671530127. The reversal of 20671530120 is 2103517602.

It is a happy number.

20671530120 is a `hidden beast` number, since 2 + 0 + 6 + 7 + 1 + 530 + 120 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 17485830756 + 3185699364 = 132234^2 + 56442^2 .

It is a super-3 number, since 3×20671530120³ (a number of 32 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (20671530127) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1682731 + ... + 1694970.

Almost surely, 2^20671530120 is an apocalyptic number.

20671530120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20671530120 is an abundant number, since it is smaller than the sum of its proper divisors (50462874000).

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

20671530120 is a wasteful number, since it uses less digits than its factorization.

20671530120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3377735 (or 3377728 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The spelling of 20671530120 in words is "twenty billion, six hundred seventy-one million, five hundred thirty thousand, one hundred twenty".