40144685910 has 128 divisors (see below), whose sum is σ = 111476736000. Its totient is φ = 9062824320.

The previous prime is 40144685851. The next prime is 40144685923. The reversal of 40144685910 is 1958644104.

It is a super-2 number, since 2×40144685910² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5805355 + ... + 5812265.

It is an arithmetic number, because the mean of its divisors is an integer number (870912000).

Almost surely, 2^40144685910 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40144685910, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55738368000).

40144685910 is an abundant number, since it is smaller than the sum of its proper divisors (71332050090).

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

40144685910 is a wasteful number, since it uses less digits than its factorization.

40144685910 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7266.

The product of its (nonzero) digits is 138240, while the sum is 42.

The spelling of 40144685910 in words is "forty billion, one hundred forty-four million, six hundred eighty-five thousand, nine hundred ten".