2001153653532 has 72 divisors (see below), whose sum is σ = 5842940633712. Its totient is φ = 570739008000.

The previous prime is 2001153653497. The next prime is 2001153653563. The reversal of 2001153653532 is 2353563511002.

2001153653532 is a `hidden beast` number, since 2 + 0 + 0 + 11 + 53 + 65 + 3 + 532 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 148623219 + ... + 148636682.

It is an arithmetic number, because the mean of its divisors is an integer number (81151953246).

Almost surely, 2^{2001153653532} is an apocalyptic number.

2001153653532 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

2001153653532 is an abundant number, since it is smaller than the sum of its proper divisors (3841786980180).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2001153653532 is a wasteful number, since it uses less digits than its factorization.

2001153653532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 297259939 (or 297259934 counting only the distinct ones).

The product of its (nonzero) digits is 81000, while the sum is 36.

The spelling of 2001153653532 in words is "two trillion, one billion, one hundred fifty-three million, six hundred fifty-three thousand, five hundred thirty-two".