11447061491 has 2 divisors, whose sum is σ = 11447061492. Its totient is φ = 11447061490.

The previous prime is 11447061463. The next prime is 11447061523. The reversal of 11447061491 is 19416074411.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11447061491 - 2¹⁴ = 11447045107 is a prime.

It is not a weakly prime, because it can be changed into another prime (11447061191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5723530745 + 5723530746.

It is an arithmetic number, because the mean of its divisors is an integer number (5723530746).

Almost surely, 2^11447061491 is an apocalyptic number.

11447061491 is a deficient number, since it is larger than the sum of its proper divisors (1).

11447061491 is an equidigital number, since it uses as much as digits as its factorization.

11447061491 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24192, while the sum is 38.

The spelling of 11447061491 in words is "eleven billion, four hundred forty-seven million, sixty-one thousand, four hundred ninety-one".