16331231552 has 14 divisors (see below), whose sum is σ = 32407287738. Its totient is φ = 8165615744.

The previous prime is 16331231503. The next prime is 16331231563. The reversal of 16331231552 is 25513213361.

It can be written as a sum of positive squares in only one way, i.e., 10293319936 + 6037911616 = 101456^2 + 77704^2 .

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127587683 + ... + 127587810.

It is an arithmetic number, because the mean of its divisors is an integer number (2314806267).

Almost surely, 2^16331231552 is an apocalyptic number.

It is an amenable number.

16331231552 is a deficient number, since it is larger than the sum of its proper divisors (16076056186).

16331231552 is an equidigital number, since it uses as much as digits as its factorization.

16331231552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255175505 (or 255175495 counting only the distinct ones).

The product of its digits is 16200, while the sum is 32.

The spelling of 16331231552 in words is "sixteen billion, three hundred thirty-one million, two hundred thirty-one thousand, five hundred fifty-two".