2001372542653 has 16 divisors (see below), whose sum is σ = 2193572215296. Its totient is φ = 1810894670640.

The previous prime is 2001372542651. The next prime is 2001372542777. The reversal of 2001372542653 is 3562452731002.

It is not a de Polignac number, because 2001372542653 - 2¹ = 2001372542651 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001372542651) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2940826 + ... + 3556852.

It is an arithmetic number, because the mean of its divisors is an integer number (137098263456).

Almost surely, 2^{2001372542653} is an apocalyptic number.

It is an amenable number.

2001372542653 is a deficient number, since it is larger than the sum of its proper divisors (192199672643).

2001372542653 is a wasteful number, since it uses less digits than its factorization.

2001372542653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 617424.

The product of its (nonzero) digits is 302400, while the sum is 40.

It can be divided in two parts, 2001372 and 542653, that added together give a square (2544025 = 1595²).

The spelling of 2001372542653 in words is "two trillion, one billion, three hundred seventy-two million, five hundred forty-two thousand, six hundred fifty-three".