21162316410 has 48 divisors (see below), whose sum is σ = 55111343976. Its totient is φ = 5634123264.

The previous prime is 21162316403. The next prime is 21162316433. The reversal of 21162316410 is 1461326112.

It is a happy number.

21162316410 is a `hidden beast` number, since 2 + 1 + 16 + 2 + 3 + 1 + 641 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 10338619041 + 10823697369 = 101679^2 + 104037^2 .

It is a super-3 number, since 3×21162316410³ (a number of 32 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 135019 + ... + 246078.

Almost surely, 2^21162316410 is an apocalyptic number.

21162316410 is an abundant number, since it is smaller than the sum of its proper divisors (33949027566).

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

21162316410 is a wasteful number, since it uses less digits than its factorization.

21162316410 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381727 (or 381724 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The spelling of 21162316410 in words is "twenty-one billion, one hundred sixty-two million, three hundred sixteen thousand, four hundred ten".