20727034513 has 2 divisors, whose sum is σ = 20727034514. Its totient is φ = 20727034512.

The previous prime is 20727034487. The next prime is 20727034567. The reversal of 20727034513 is 31543072702.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20538329344 + 188705169 = 143312^2 + 13737^2 .

It is a cyclic number.

It is not a de Polignac number, because 20727034513 - 2¹³ = 20727026321 is a prime.

It is not a weakly prime, because it can be changed into another prime (20727034213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10363517256 + 10363517257.

It is an arithmetic number, because the mean of its divisors is an integer number (10363517257).

Almost surely, 2^20727034513 is an apocalyptic number.

It is an amenable number.

20727034513 is a deficient number, since it is larger than the sum of its proper divisors (1).

20727034513 is an equidigital number, since it uses as much as digits as its factorization.

20727034513 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 35280, while the sum is 34.

The spelling of 20727034513 in words is "twenty billion, seven hundred twenty-seven million, thirty-four thousand, five hundred thirteen".