1445540235621 has 8 divisors (see below), whose sum is σ = 1928070705120. Its totient is φ = 963351628272.

The previous prime is 1445540235617. The next prime is 1445540235631. The reversal of 1445540235621 is 1265320455441.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1445540235621 - 2² = 1445540235617 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1445540235631) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 85455670 + ... + 85472583.

It is an arithmetic number, because the mean of its divisors is an integer number (241008838140).

Almost surely, 2^{1445540235621} is an apocalyptic number.

It is an amenable number.

1445540235621 is a deficient number, since it is larger than the sum of its proper divisors (482530469499).

1445540235621 is a wasteful number, since it uses less digits than its factorization.

1445540235621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170931075.

The product of its (nonzero) digits is 576000, while the sum is 42.

The spelling of 1445540235621 in words is "one trillion, four hundred forty-five billion, five hundred forty million, two hundred thirty-five thousand, six hundred twenty-one".