16091243952 has 40 divisors (see below), whose sum is σ = 47507483136. Its totient is φ = 4597498176.

The previous prime is 16091243951. The next prime is 16091244023. The reversal of 16091243952 is 25934219061.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (16091243951) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23944968 + ... + 23945639.

Almost surely, 2^16091243952 is an apocalyptic number.

16091243952 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

16091243952 is an abundant number, since it is smaller than the sum of its proper divisors (31416239184).

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

16091243952 is a wasteful number, since it uses less digits than its factorization.

16091243952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47890625 (or 47890619 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 42.

The spelling of 16091243952 in words is "sixteen billion, ninety-one million, two hundred forty-three thousand, nine hundred fifty-two".