20972908118071 has 16 divisors (see below), whose sum is σ = 25818713250624. Its totient is φ = 16590154328064.

The previous prime is 20972908118069. The next prime is 20972908118101. The reversal of 20972908118071 is 17081180927902.

It is a cyclic number.

It is not a de Polignac number, because 20972908118071 - 2¹ = 20972908118069 is a prime.

It is a super-2 number, since 2×20972908118071² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20972908119071) by changing a digit.

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, 25953706 + ... + 26749591.

It is an arithmetic number, because the mean of its divisors is an integer number (1613669578164).

Almost surely, 2^{20972908118071} is an apocalyptic number.

20972908118071 is a deficient number, since it is larger than the sum of its proper divisors (4845805132553).

20972908118071 is a wasteful number, since it uses less digits than its factorization.

20972908118071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52707690.

The product of its (nonzero) digits is 1016064, while the sum is 55.

The spelling of 20972908118071 in words is "twenty trillion, nine hundred seventy-two billion, nine hundred eight million, one hundred eighteen thousand, seventy-one".