20611209272 has 32 divisors (see below), whose sum is σ = 40687920000. Its totient is φ = 9761308128.

The previous prime is 20611209239. The next prime is 20611209323. The reversal of 20611209272 is 27290211602.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1057229 + ... + 1076547.

It is an arithmetic number, because the mean of its divisors is an integer number (1271497500).

Almost surely, 2^20611209272 is an apocalyptic number.

It is an amenable number.

20611209272 is a deficient number, since it is larger than the sum of its proper divisors (20076710728).

20611209272 is a wasteful number, since it uses less digits than its factorization.

20611209272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26363 (or 26359 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 32.

The spelling of 20611209272 in words is "twenty billion, six hundred eleven million, two hundred nine thousand, two hundred seventy-two".