1601271444639 has 32 divisors (see below), whose sum is σ = 2311763263488. Its totient is φ = 982988028000.

The previous prime is 1601271444599. The next prime is 1601271444673. The reversal of 1601271444639 is 9364441721061.

It is not a de Polignac number, because 1601271444639 - 2¹³ = 1601271436447 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1601271444679) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1551157 + ... + 2368254.

It is an arithmetic number, because the mean of its divisors is an integer number (72242601984).

Almost surely, 2^{1601271444639} is an apocalyptic number.

1601271444639 is a deficient number, since it is larger than the sum of its proper divisors (710491818849).

1601271444639 is a wasteful number, since it uses less digits than its factorization.

1601271444639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3919659.

The product of its (nonzero) digits is 870912, while the sum is 48.

The spelling of 1601271444639 in words is "one trillion, six hundred one billion, two hundred seventy-one million, four hundred forty-four thousand, six hundred thirty-nine".