16440620156 has 24 divisors (see below), whose sum is σ = 30075421824. Its totient is φ = 7848914480.

The previous prime is 16440620153. The next prime is 16440620167. The reversal of 16440620156 is 65102604461.

It is a super-3 number, since 3×16440620156³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16440620153) 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, 106910 + ... + 210501.

It is an arithmetic number, because the mean of its divisors is an integer number (1253142576).

Almost surely, 2^16440620156 is an apocalyptic number.

It is an amenable number.

16440620156 is a deficient number, since it is larger than the sum of its proper divisors (13634801668).

16440620156 is a wasteful number, since it uses less digits than its factorization.

16440620156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318001 (or 317999 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 35.

The spelling of 16440620156 in words is "sixteen billion, four hundred forty million, six hundred twenty thousand, one hundred fifty-six".