1463440573381 has 2 divisors, whose sum is σ = 1463440573382. Its totient is φ = 1463440573380.

The previous prime is 1463440573369. The next prime is 1463440573493. The reversal of 1463440573381 is 1833750443641.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1086162080481 + 377278492900 = 1042191^2 + 614230^2 .

It is a cyclic number.

It is not a de Polignac number, because 1463440573381 - 2²¹ = 1463438476229 is a prime.

It is a super-2 number, since 2×1463440573381² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1463440573321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 731720286690 + 731720286691.

It is an arithmetic number, because the mean of its divisors is an integer number (731720286691).

Almost surely, 2^{1463440573381} is an apocalyptic number.

It is an amenable number.

1463440573381 is a deficient number, since it is larger than the sum of its proper divisors (1).

1463440573381 is an equidigital number, since it uses as much as digits as its factorization.

1463440573381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2903040, while the sum is 49.

The spelling of 1463440573381 in words is "one trillion, four hundred sixty-three billion, four hundred forty million, five hundred seventy-three thousand, three hundred eighty-one".