2001542044015 has 8 divisors (see below), whose sum is σ = 2543135773680. Its totient is φ = 1507043421312.

The previous prime is 2001542043989. The next prime is 2001542044063. The reversal of 2001542044015 is 5104402451002.

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

It is a cyclic number.

It is not a de Polignac number, because 2001542044015 - 2⁷ = 2001542043887 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11773776645 + ... + 11773776814.

It is an arithmetic number, because the mean of its divisors is an integer number (317891971710).

Almost surely, 2^{2001542044015} is an apocalyptic number.

2001542044015 is a deficient number, since it is larger than the sum of its proper divisors (541593729665).

2001542044015 is a wasteful number, since it uses less digits than its factorization.

2001542044015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23547553481.

The product of its (nonzero) digits is 6400, while the sum is 28.

Adding to 2001542044015 its reverse (5104402451002), we get a palindrome (7105944495017).

The spelling of 2001542044015 in words is "two trillion, one billion, five hundred forty-two million, forty-four thousand, fifteen".