20711272655 has 16 divisors (see below), whose sum is σ = 24954652800. Its totient is φ = 16501737120.

The previous prime is 20711272633. The next prime is 20711272657. The reversal of 20711272655 is 55627211702.

It is not a de Polignac number, because 20711272655 - 2⁶ = 20711272591 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20711272657) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1288820 + ... + 1304790.

It is an arithmetic number, because the mean of its divisors is an integer number (1559665800).

Almost surely, 2^20711272655 is an apocalyptic number.

20711272655 is a deficient number, since it is larger than the sum of its proper divisors (4243380145).

20711272655 is a wasteful number, since it uses less digits than its factorization.

20711272655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17014.

The product of its (nonzero) digits is 58800, while the sum is 38.

The spelling of 20711272655 in words is "twenty billion, seven hundred eleven million, two hundred seventy-two thousand, six hundred fifty-five".