32091521536 has 20 divisors (see below), whose sum is σ = 64120365342. Its totient is φ = 16045760512.

The previous prime is 32091521453. The next prime is 32091521549. The reversal of 32091521536 is 63512519023.

It can be written as a sum of positive squares in only one way, i.e., 32061051136 + 30470400 = 179056^2 + 5520^2 .

It is a junction number, because it is equal to n+sod(n) for n = 32091521495 and 32091521504.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31338865 + ... + 31339888.

Almost surely, 2^32091521536 is an apocalyptic number.

It is an amenable number.

32091521536 is a deficient number, since it is larger than the sum of its proper divisors (32028843806).

32091521536 is an frugal number, since it uses more digits than its factorization.

32091521536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62678771 (or 62678755 counting only the distinct ones).

The product of its (nonzero) digits is 48600, while the sum is 37.

The spelling of 32091521536 in words is "thirty-two billion, ninety-one million, five hundred twenty-one thousand, five hundred thirty-six".