1445710363681 has 4 divisors (see below), whose sum is σ = 1445820241600. Its totient is φ = 1445600485764.

The previous prime is 1445710363631. The next prime is 1445710363759. The reversal of 1445710363681 is 1863630175441.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1445710363681 - 2³¹ = 1443562880033 is a prime.

It is a super-2 number, since 2×1445710363681² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1445710363631) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54919221 + ... + 54945538.

It is an arithmetic number, because the mean of its divisors is an integer number (361455060400).

Almost surely, 2^{1445710363681} is an apocalyptic number.

It is an amenable number.

1445710363681 is a deficient number, since it is larger than the sum of its proper divisors (109877919).

1445710363681 is a wasteful number, since it uses less digits than its factorization.

1445710363681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109877918.

The product of its (nonzero) digits is 1451520, while the sum is 49.

The spelling of 1445710363681 in words is "one trillion, four hundred forty-five billion, seven hundred ten million, three hundred sixty-three thousand, six hundred eighty-one".