10001556162 has 80 divisors (see below), whose sum is σ = 24297550200. Its totient is φ = 3056652288.

The previous prime is 10001556151. The next prime is 10001556193. The reversal of 10001556162 is 26165510001.

It is a happy number.

10001556162 is a `hidden beast` number, since 100 + 0 + 1 + 556 + 1 + 6 + 2 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 3339568521 + 6661987641 = 57789^2 + 81621^2 .

It is a super-2 number, since 2×10001556162² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

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 39 ways as a sum of consecutive naturals, for example, 297858 + ... + 329730.

Almost surely, 2^10001556162 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 10001556162, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12148775100).

10001556162 is an abundant number, since it is smaller than the sum of its proper divisors (14295994038).

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

10001556162 is a wasteful number, since it uses less digits than its factorization.

10001556162 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32049 (or 32040 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 27.

The spelling of 10001556162 in words is "ten billion, one million, five hundred fifty-six thousand, one hundred sixty-two".