16232321787 has 16 divisors (see below), whose sum is σ = 23613432960. Its totient is φ = 9836611200.

The previous prime is 16232321663. The next prime is 16232321839. The reversal of 16232321787 is 78712323261.

It is a happy number.

It is not a de Polignac number, because 16232321787 - 2¹⁸ = 16232059643 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16232321087) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 316764 + ... + 364422.

It is an arithmetic number, because the mean of its divisors is an integer number (1475839560).

Almost surely, 2^16232321787 is an apocalyptic number.

16232321787 is a deficient number, since it is larger than the sum of its proper divisors (7381111173).

16232321787 is a wasteful number, since it uses less digits than its factorization.

16232321787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57994.

The product of its digits is 169344, while the sum is 42.

The spelling of 16232321787 in words is "sixteen billion, two hundred thirty-two million, three hundred twenty-one thousand, seven hundred eighty-seven".