1445456511542 has 4 divisors (see below), whose sum is σ = 2168184767316.
Its totient is φ = 722728255770.
The previous prime is 1445456511439. The next prime is 1445456511553. The reversal of 1445456511542 is 2451156545441.
It is a semiprime because it is the product of two primes.
It is a congruent number.
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 361364127884 + ... + 361364127887.
It is an arithmetic number, because the mean of its divisors is an integer number (542046191829).
Almost surely, 21445456511542 is an apocalyptic number.
1445456511542 is a deficient number, since it is larger than the sum of its proper divisors (722728255774).
1445456511542 is an equidigital number, since it uses as much as digits as its factorization.
1445456511542 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 722728255773.
The product of its digits is 1920000, while the sum is 47.
The spelling of 1445456511542 in words is "one trillion, four hundred forty-five billion, four hundred fifty-six million, five hundred eleven thousand, five hundred forty-two".