2153808581532 has 24 divisors (see below), whose sum is σ = 5025763053696. Its totient is φ = 717906237168.

The previous prime is 2153808581521. The next prime is 2153808581563. The reversal of 2153808581532 is 2351858083512.

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, 3444048 + ... + 4021079.

It is an arithmetic number, because the mean of its divisors is an integer number (209406793904).

Almost surely, 2^{2153808581532} is an apocalyptic number.

It is an amenable number.

2153808581532 is an abundant number, since it is smaller than the sum of its proper divisors (2871954472164).

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

2153808581532 is a wasteful number, since it uses less digits than its factorization.

2153808581532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7489177 (or 7489175 counting only the distinct ones).

The product of its (nonzero) digits is 2304000, while the sum is 51.

The spelling of 2153808581532 in words is "two trillion, one hundred fifty-three billion, eight hundred eight million, five hundred eighty-one thousand, five hundred thirty-two".