445521020135 has 16 divisors (see below), whose sum is σ = 539579408256. Its totient is φ = 353116635648.

The previous prime is 445521020123. The next prime is 445521020143. The reversal of 445521020135 is 531020125544.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-445521020135 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 15 ways as a sum of consecutive naturals, for example, 1215122 + ... + 1538688.

It is an arithmetic number, because the mean of its divisors is an integer number (33723713016).

Almost surely, 2^445521020135 is an apocalyptic number.

445521020135 is a deficient number, since it is larger than the sum of its proper divisors (94058388121).

445521020135 is a wasteful number, since it uses less digits than its factorization.

445521020135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326122.

The product of its (nonzero) digits is 24000, while the sum is 32.

Adding to 445521020135 its reverse (531020125544), we get a palindrome (976541145679).

The spelling of 445521020135 in words is "four hundred forty-five billion, five hundred twenty-one million, twenty thousand, one hundred thirty-five".