16140531582 has 160 divisors (see below), whose sum is σ = 42503408640. Its totient is φ = 4481930880.

The previous prime is 16140531577. The next prime is 16140531587. The reversal of 16140531582 is 28513504161.

16140531582 is a `hidden beast` number, since 1 + 6 + 1 + 40 + 5 + 31 + 582 = 666.

It is an interprime number because it is at equal distance from previous prime (16140531577) and next prime (16140531587).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16140531587) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 16690863 + ... + 16691829.

It is an arithmetic number, because the mean of its divisors is an integer number (265646304).

Almost surely, 2^16140531582 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16140531582, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21251704320).

16140531582 is an abundant number, since it is smaller than the sum of its proper divisors (26362877058).

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

16140531582 is a wasteful number, since it uses less digits than its factorization.

16140531582 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1388 (or 1379 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 36.

The spelling of 16140531582 in words is "sixteen billion, one hundred forty million, five hundred thirty-one thousand, five hundred eighty-two".