1463506661257 has 2 divisors, whose sum is σ = 1463506661258. Its totient is φ = 1463506661256.

The previous prime is 1463506661251. The next prime is 1463506661377. The reversal of 1463506661257 is 7521666053641.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1429198731081 + 34307930176 = 1195491^2 + 185224^2 .

It is a cyclic number.

It is not a de Polignac number, because 1463506661257 - 2³ = 1463506661249 is a prime.

It is a super-2 number, since 2×1463506661257² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1463506661251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 731753330628 + 731753330629.

It is an arithmetic number, because the mean of its divisors is an integer number (731753330629).

Almost surely, 2^{1463506661257} is an apocalyptic number.

It is an amenable number.

1463506661257 is a deficient number, since it is larger than the sum of its proper divisors (1).

1463506661257 is an equidigital number, since it uses as much as digits as its factorization.

1463506661257 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5443200, while the sum is 52.

The spelling of 1463506661257 in words is "one trillion, four hundred sixty-three billion, five hundred six million, six hundred sixty-one thousand, two hundred fifty-seven".