16634440516 has 12 divisors (see below), whose sum is σ = 29111297040. Its totient is φ = 8316927080.

The previous prime is 16634440481. The next prime is 16634440519. The reversal of 16634440516 is 61504443661.

It is a happy number.

It is a super-2 number, since 2×16634440516² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (16634440519) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 99771 + ... + 207901.

It is an arithmetic number, because the mean of its divisors is an integer number (2425941420).

Almost surely, 2^16634440516 is an apocalyptic number.

It is an amenable number.

16634440516 is a deficient number, since it is larger than the sum of its proper divisors (12476856524).

16634440516 is a wasteful number, since it uses less digits than its factorization.

16634440516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146594 (or 146592 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 40.

The spelling of 16634440516 in words is "sixteen billion, six hundred thirty-four million, four hundred forty thousand, five hundred sixteen".