20617010772620 has 48 divisors (see below), whose sum is σ = 43338783196800. Its totient is φ = 8238603626496.

The previous prime is 20617010772601. The next prime is 20617010772643. The reversal of 20617010772620 is 2627701071602.

It is a super-2 number, since 2×20617010772620² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 301062704 + ... + 301131176.

It is an arithmetic number, because the mean of its divisors is an integer number (902891316600).

Almost surely, 2^{20617010772620} is an apocalyptic number.

20617010772620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20617010772620 is an abundant number, since it is smaller than the sum of its proper divisors (22721772424180).

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

20617010772620 is a wasteful number, since it uses less digits than its factorization.

20617010772620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83234 (or 83232 counting only the distinct ones).

The product of its (nonzero) digits is 98784, while the sum is 41.

The spelling of 20617010772620 in words is "twenty trillion, six hundred seventeen billion, ten million, seven hundred seventy-two thousand, six hundred twenty".