40138853584 has 20 divisors (see below), whose sum is σ = 77798033380. Its totient is φ = 20061941760.

The previous prime is 40138853569. The next prime is 40138853603. The reversal of 40138853584 is 48535883104.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 15780384400 + 24358469184 = 125620^2 + 156072^2 .

It is a super-2 number, since 2×40138853584² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 423447 + ... + 509494.

It is an arithmetic number, because the mean of its divisors is an integer number (3889901669).

Almost surely, 2^40138853584 is an apocalyptic number.

It is an amenable number.

40138853584 is a deficient number, since it is larger than the sum of its proper divisors (37659179796).

40138853584 is a wasteful number, since it uses less digits than its factorization.

40138853584 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 935638 (or 935632 counting only the distinct ones).

The product of its (nonzero) digits is 1843200, while the sum is 49.

The spelling of 40138853584 in words is "forty billion, one hundred thirty-eight million, eight hundred fifty-three thousand, five hundred eighty-four".