2162281388436 has 480 divisors, whose sum is σ = 6369879301632. Its totient is φ = 635325327360.

The previous prime is 2162281388413. The next prime is 2162281388471. The reversal of 2162281388436 is 6348831822612.

2162281388436 is a `hidden beast` number, since 2 + 1 + 6 + 228 + 1 + 388 + 4 + 36 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 1654384495 + ... + 1654385801.

Almost surely, 2^{2162281388436} is an apocalyptic number.

2162281388436 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2162281388436, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3184939650816).

2162281388436 is an abundant number, since it is smaller than the sum of its proper divisors (4207597913196).

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

2162281388436 is a wasteful number, since it uses less digits than its factorization.

2162281388436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1581 (or 1570 counting only the distinct ones).

The product of its digits is 5308416, while the sum is 54.

The spelling of 2162281388436 in words is "two trillion, one hundred sixty-two billion, two hundred eighty-one million, three hundred eighty-eight thousand, four hundred thirty-six".