63321040457 has 2 divisors, whose sum is σ = 63321040458. Its totient is φ = 63321040456.

The previous prime is 63321040361. The next prime is 63321040477. The reversal of 63321040457 is 75404012336.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36421432336 + 26899608121 = 190844^2 + 164011^2 .

It is a cyclic number.

It is not a de Polignac number, because 63321040457 - 2¹⁶ = 63320974921 is a prime.

It is not a weakly prime, because it can be changed into another prime (63321040477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31660520228 + 31660520229.

It is an arithmetic number, because the mean of its divisors is an integer number (31660520229).

Almost surely, 2^63321040457 is an apocalyptic number.

It is an amenable number.

63321040457 is a deficient number, since it is larger than the sum of its proper divisors (1).

63321040457 is an equidigital number, since it uses as much as digits as its factorization.

63321040457 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 60480, while the sum is 35.

The spelling of 63321040457 in words is "sixty-three billion, three hundred twenty-one million, forty thousand, four hundred fifty-seven".