1445866639357 has 4 divisors (see below), whose sum is σ = 1652419016416. Its totient is φ = 1239314262300.

The previous prime is 1445866639319. The next prime is 1445866639387. The reversal of 1445866639357 is 7539366685441.

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 1445866639357 - 2¹¹ = 1445866637309 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1445866639292 and 1445866639301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1445866639387) 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, 103276188519 + ... + 103276188532.

It is an arithmetic number, because the mean of its divisors is an integer number (413104754104).

Almost surely, 2^{1445866639357} is an apocalyptic number.

It is an amenable number.

1445866639357 is a deficient number, since it is larger than the sum of its proper divisors (206552377059).

1445866639357 is an equidigital number, since it uses as much as digits as its factorization.

1445866639357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206552377058.

The product of its digits is 391910400, while the sum is 67.

The spelling of 1445866639357 in words is "one trillion, four hundred forty-five billion, eight hundred sixty-six million, six hundred thirty-nine thousand, three hundred fifty-seven".