40188516380 has 48 divisors (see below), whose sum is σ = 86478712320. Its totient is φ = 15679718208.

The previous prime is 40188516373. The next prime is 40188516421. The reversal of 40188516380 is 8361588104.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 593081 + ... + 657359.

It is an arithmetic number, because the mean of its divisors is an integer number (1801639840).

Almost surely, 2^40188516380 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40188516380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43239356160).

40188516380 is an abundant number, since it is smaller than the sum of its proper divisors (46290195940).

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

40188516380 is a wasteful number, since it uses less digits than its factorization.

40188516380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65058 (or 65056 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 44.

The spelling of 40188516380 in words is "forty billion, one hundred eighty-eight million, five hundred sixteen thousand, three hundred eighty".