40155263188 has 6 divisors (see below), whose sum is σ = 70271710586. Its totient is φ = 20077631592.

The previous prime is 40155263149. The next prime is 40155263189. The reversal of 40155263188 is 88136255104.

It can be written as a sum of positive squares in only one way, i.e., 26347133124 + 13808130064 = 162318^2 + 117508^2 .

It is a super-2 number, since 2×40155263188² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40155263189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5019407895 + ... + 5019407902.

Almost surely, 2^40155263188 is an apocalyptic number.

It is an amenable number.

40155263188 is a deficient number, since it is larger than the sum of its proper divisors (30116447398).

40155263188 is a wasteful number, since it uses less digits than its factorization.

40155263188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10038815801 (or 10038815799 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 43.

The spelling of 40155263188 in words is "forty billion, one hundred fifty-five million, two hundred sixty-three thousand, one hundred eighty-eight".