32145211520 has 32 divisors (see below), whose sum is σ = 76847147820. Its totient is φ = 12858084352.

The previous prime is 32145211519. The next prime is 32145211523. The reversal of 32145211520 is 2511254123.

It can be written as a sum of positive squares in 2 ways, for example, as 31453731904 + 691479616 = 177352^2 + 26296^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-3 number, since 3×32145211520³ (a number of 32 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 32145211520.

It is not an unprimeable number, because it can be changed into a prime (32145211523) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25112807 + ... + 25114086.

Almost surely, 2^32145211520 is an apocalyptic number.

It is an amenable number.

32145211520 is an abundant number, since it is smaller than the sum of its proper divisors (44701936300).

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

32145211520 is an equidigital number, since it uses as much as digits as its factorization.

32145211520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50226912 (or 50226900 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 26.

Adding to 32145211520 its reverse (2511254123), we get a palindrome (34656465643).

The spelling of 32145211520 in words is "thirty-two billion, one hundred forty-five million, two hundred eleven thousand, five hundred twenty".