40140891188 has 6 divisors (see below), whose sum is σ = 70246559586. Its totient is φ = 20070445592.

The previous prime is 40140891149. The next prime is 40140891211. The reversal of 40140891188 is 88119804104.

It can be written as a sum of positive squares in only one way, i.e., 36359625124 + 3781266064 = 190682^2 + 61492^2 .

It is a super-2 number, since 2×40140891188² (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 as a sum of consecutive naturals, namely, 5017611395 + ... + 5017611402.

It is an arithmetic number, because the mean of its divisors is an integer number (11707759931).

Almost surely, 2^40140891188 is an apocalyptic number.

It is an amenable number.

40140891188 is a deficient number, since it is larger than the sum of its proper divisors (30105668398).

40140891188 is a wasteful number, since it uses less digits than its factorization.

40140891188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10035222801 (or 10035222799 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 44.

The spelling of 40140891188 in words is "forty billion, one hundred forty million, eight hundred ninety-one thousand, one hundred eighty-eight".