20356752877471 has 2 divisors, whose sum is σ = 20356752877472. Its totient is φ = 20356752877470.

The previous prime is 20356752877457. The next prime is 20356752877493. The reversal of 20356752877471 is 17477825765302.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20356752877471 - 2¹³ = 20356752869279 is a prime.

It is a super-3 number, since 3×20356752877471³ (a number of 41 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20356752877171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10178376438735 + 10178376438736.

It is an arithmetic number, because the mean of its divisors is an integer number (10178376438736).

Almost surely, 2^{20356752877471} is an apocalyptic number.

20356752877471 is a deficient number, since it is larger than the sum of its proper divisors (1).

20356752877471 is an equidigital number, since it uses as much as digits as its factorization.

20356752877471 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 138297600, while the sum is 64.

The spelling of 20356752877471 in words is "twenty trillion, three hundred fifty-six billion, seven hundred fifty-two million, eight hundred seventy-seven thousand, four hundred seventy-one".