999916532416 has 14 divisors (see below), whose sum is σ = 1984209369140. Its totient is φ = 499958266176.

The previous prime is 999916532411. The next prime is 999916532449. The reversal of 999916532416 is 614235619999.

It is a Harshad number since it is a multiple of its sum of digits (64), and also a Moran number because the ratio is a prime number: 15623695819 = 999916532416 / (9 + 9 + 9 + 9 + 1 + 6 + 5 + 3 + 2 + 4 + 1 + 6).

It is not an unprimeable number, because it can be changed into a prime (999916532411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7811847846 + ... + 7811847973.

Almost surely, 2^999916532416 is an apocalyptic number.

It is an amenable number.

999916532416 is a deficient number, since it is larger than the sum of its proper divisors (984292836724).

999916532416 is a wasteful number, since it uses less digits than its factorization.

999916532416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15623695831 (or 15623695821 counting only the distinct ones).

The product of its digits is 28343520, while the sum is 64.

The spelling of 999916532416 in words is "nine hundred ninety-nine billion, nine hundred sixteen million, five hundred thirty-two thousand, four hundred sixteen".