20727161172707 has 12 divisors (see below), whose sum is σ = 22783256942208. Its totient is φ = 18842452371600.

The previous prime is 20727161172677. The next prime is 20727161172709. The reversal of 20727161172707 is 70727116172702.

It is not a de Polignac number, because 20727161172707 - 2¹⁶ = 20727161107171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20727161172709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3581957 + ... + 7367817.

It is an arithmetic number, because the mean of its divisors is an integer number (1898604745184).

Almost surely, 2^{20727161172707} is an apocalyptic number.

20727161172707 is a deficient number, since it is larger than the sum of its proper divisors (2056095769501).

20727161172707 is a wasteful number, since it uses less digits than its factorization.

20727161172707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3831130 (or 3831119 counting only the distinct ones).

The product of its (nonzero) digits is 806736, while the sum is 50.

It can be divided in two parts, 2072716 and 1172707, that added together give a palindrome (3245423).

The spelling of 20727161172707 in words is "twenty trillion, seven hundred twenty-seven billion, one hundred sixty-one million, one hundred seventy-two thousand, seven hundred seven".