27901527661243 has 2 divisors, whose sum is σ = 27901527661244. Its totient is φ = 27901527661242.

The previous prime is 27901527661171. The next prime is 27901527661277. The reversal of 27901527661243 is 34216672510972.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 27901527661243 - 2⁴¹ = 25702504405691 is a prime.

It is a super-2 number, since 2×27901527661243² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (27901527661043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13950763830621 + 13950763830622.

It is an arithmetic number, because the mean of its divisors is an integer number (13950763830622).

Almost surely, 2^{27901527661243} is an apocalyptic number.

27901527661243 is a deficient number, since it is larger than the sum of its proper divisors (1).

27901527661243 is an equidigital number, since it uses as much as digits as its factorization.

27901527661243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7620480, while the sum is 55.

The spelling of 27901527661243 in words is "twenty-seven trillion, nine hundred one billion, five hundred twenty-seven million, six hundred sixty-one thousand, two hundred forty-three".