20611724130 has 56 divisors (see below), whose sum is σ = 55626228252. Its totient is φ = 5496457824.

The previous prime is 20611724129. The next prime is 20611724167. The reversal of 20611724130 is 3142711602.

20611724130 is a `hidden beast` number, since 2 + 0 + 611 + 7 + 2 + 41 + 3 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 20609186481 + 2537649 = 143559^2 + 1593^2 .

It is a super-2 number, since 2×20611724130² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20611724094 and 20611724103.

It is an unprimeable number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 1406409 + ... + 1420988.

Almost surely, 2^20611724130 is an apocalyptic number.

20611724130 is an abundant number, since it is smaller than the sum of its proper divisors (35014504122).

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

20611724130 is an equidigital number, since it uses as much as digits as its factorization.

20611724130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2827422 (or 2827407 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The spelling of 20611724130 in words is "twenty billion, six hundred eleven million, seven hundred twenty-four thousand, one hundred thirty".