16215344660 has 24 divisors (see below), whose sum is σ = 34300785960. Its totient is φ = 6438792704.

The previous prime is 16215344659. The next prime is 16215344671. The reversal of 16215344660 is 6644351261.

It can be written as a sum of positive squares in 4 ways, for example, as 3620669584 + 12594675076 = 60172^2 + 112226^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2956265 + ... + 2961744.

It is an arithmetic number, because the mean of its divisors is an integer number (1429199415).

Almost surely, 2^16215344660 is an apocalyptic number.

16215344660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16215344660 is an abundant number, since it is smaller than the sum of its proper divisors (18085441300).

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

16215344660 is a wasteful number, since it uses less digits than its factorization.

16215344660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5918155 (or 5918153 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 38.

The spelling of 16215344660 in words is "sixteen billion, two hundred fifteen million, three hundred forty-four thousand, six hundred sixty".