47616491491 has 2 divisors, whose sum is σ = 47616491492. Its totient is φ = 47616491490.

The previous prime is 47616491477. The next prime is 47616491537. The reversal of 47616491491 is 19419461674.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 47616491491 - 2²¹ = 47614394339 is a prime.

It is not a weakly prime, because it can be changed into another prime (47616491291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23808245745 + 23808245746.

It is an arithmetic number, because the mean of its divisors is an integer number (23808245746).

Almost surely, 2^47616491491 is an apocalyptic number.

47616491491 is a deficient number, since it is larger than the sum of its proper divisors (1).

47616491491 is an equidigital number, since it uses as much as digits as its factorization.

47616491491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1306368, while the sum is 52.

The spelling of 47616491491 in words is "forty-seven billion, six hundred sixteen million, four hundred ninety-one thousand, four hundred ninety-one".