1445540450015 has 4 divisors (see below), whose sum is σ = 1734648540024. Its totient is φ = 1156432360008.

The previous prime is 1445540449939. The next prime is 1445540450021. The reversal of 1445540450015 is 5100540455441.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1445540450015 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 144554044997 + ... + 144554045006.

It is an arithmetic number, because the mean of its divisors is an integer number (433662135006).

Almost surely, 2^{1445540450015} is an apocalyptic number.

1445540450015 is a deficient number, since it is larger than the sum of its proper divisors (289108090009).

1445540450015 is an equidigital number, since it uses as much as digits as its factorization.

1445540450015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289108090008.

The product of its (nonzero) digits is 160000, while the sum is 38.

The spelling of 1445540450015 in words is "one trillion, four hundred forty-five billion, five hundred forty million, four hundred fifty thousand, fifteen".