20132611620 has 144 divisors (see below), whose sum is σ = 64656385920. Its totient is φ = 4668392960.

The previous prime is 20132611619. The next prime is 20132611637. The reversal of 20132611620 is 2611623102.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 106696 + ... + 227264.

It is an arithmetic number, because the mean of its divisors is an integer number (449002680).

Almost surely, 2^20132611620 is an apocalyptic number.

20132611620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20132611620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32328192960).

20132611620 is an abundant number, since it is smaller than the sum of its proper divisors (44523774300).

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

20132611620 is a wasteful number, since it uses less digits than its factorization.

20132611620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120626 (or 120613 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

The spelling of 20132611620 in words is "twenty billion, one hundred thirty-two million, six hundred eleven thousand, six hundred twenty".