20537531566127 has 16 divisors (see below), whose sum is σ = 21598086067200. Its totient is φ = 19491236030112.

The previous prime is 20537531566103. The next prime is 20537531566183. The reversal of 20537531566127 is 72166513573502.

It is a cyclic number.

It is not a de Polignac number, because 20537531566127 - 2³⁶ = 20468812089391 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20537531566327) 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, 195383 + ... + 6411960.

It is an arithmetic number, because the mean of its divisors is an integer number (1349880379200).

Almost surely, 2^{20537531566127} is an apocalyptic number.

20537531566127 is a deficient number, since it is larger than the sum of its proper divisors (1060554501073).

20537531566127 is a wasteful number, since it uses less digits than its factorization.

20537531566127 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6608422.

The product of its (nonzero) digits is 7938000, while the sum is 53.

The spelling of 20537531566127 in words is "twenty trillion, five hundred thirty-seven billion, five hundred thirty-one million, five hundred sixty-six thousand, one hundred twenty-seven".