16019991552 has 88 divisors (see below), whose sum is σ = 42852323776. Its totient is φ = 5320839168.

The previous prime is 16019991539. The next prime is 16019991577. The reversal of 16019991552 is 25519991061.

16019991552 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 860163 + ... + 878589.

Almost surely, 2^16019991552 is an apocalyptic number.

16019991552 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16019991552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21426161888).

16019991552 is an abundant number, since it is smaller than the sum of its proper divisors (26832332224).

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

16019991552 is a wasteful number, since it uses less digits than its factorization.

16019991552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18733 (or 18715 counting only the distinct ones).

The product of its (nonzero) digits is 218700, while the sum is 48.

The spelling of 16019991552 in words is "sixteen billion, nineteen million, nine hundred ninety-one thousand, five hundred fifty-two".