20355611207272 has 32 divisors (see below), whose sum is σ = 41676169248000. Its totient is φ = 9243730153600.

The previous prime is 20355611207227. The next prime is 20355611207303. The reversal of 20355611207272 is 27270211655302.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 110162104 + ... + 110346727.

It is an arithmetic number, because the mean of its divisors is an integer number (1302380289000).

Almost surely, 2^{20355611207272} is an apocalyptic number.

20355611207272 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20355611207272 is an abundant number, since it is smaller than the sum of its proper divisors (21320558040728).

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

20355611207272 is a wasteful number, since it uses less digits than its factorization.

20355611207272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220509897 (or 220509893 counting only the distinct ones).

The product of its (nonzero) digits is 352800, while the sum is 43.

The spelling of 20355611207272 in words is "twenty trillion, three hundred fifty-five billion, six hundred eleven million, two hundred seven thousand, two hundred seventy-two".