16436642612 has 24 divisors (see below), whose sum is σ = 30980439336. Its totient is φ = 7585239168.

The previous prime is 16436642611. The next prime is 16436642653. The reversal of 16436642612 is 21624663461.

It can be written as a sum of positive squares in 4 ways, for example, as 1539463696 + 14897178916 = 39236^2 + 122054^2 .

It is a super-2 number, since 2×16436642612² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 16436642612.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16436642611) 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, 644618 + ... + 669630.

It is an arithmetic number, because the mean of its divisors is an integer number (1290851639).

Almost surely, 2^16436642612 is an apocalyptic number.

It is an amenable number.

16436642612 is a deficient number, since it is larger than the sum of its proper divisors (14543796724).

16436642612 is a wasteful number, since it uses less digits than its factorization.

16436642612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37667 (or 37665 counting only the distinct ones).

The product of its digits is 248832, while the sum is 41.

The spelling of 16436642612 in words is "sixteen billion, four hundred thirty-six million, six hundred forty-two thousand, six hundred twelve".