63548705491 has 2 divisors, whose sum is σ = 63548705492. Its totient is φ = 63548705490.

The previous prime is 63548705411. The next prime is 63548705543. The reversal of 63548705491 is 19450784536.

It is an a-pointer prime, because the next prime (63548705543) can be obtained adding 63548705491 to its sum of digits (52).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 63548705491 - 2¹¹ = 63548703443 is a prime.

It is not a weakly prime, because it can be changed into another prime (63548705411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31774352745 + 31774352746.

It is an arithmetic number, because the mean of its divisors is an integer number (31774352746).

Almost surely, 2^63548705491 is an apocalyptic number.

63548705491 is a deficient number, since it is larger than the sum of its proper divisors (1).

63548705491 is an equidigital number, since it uses as much as digits as its factorization.

63548705491 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3628800, while the sum is 52.

The spelling of 63548705491 in words is "sixty-three billion, five hundred forty-eight million, seven hundred five thousand, four hundred ninety-one".