40155471227 has 4 divisors (see below), whose sum is σ = 40176935136. Its totient is φ = 40134007320.

The previous prime is 40155471203. The next prime is 40155471229. The reversal of 40155471227 is 72217455104.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 40155471227 - 2¹⁶ = 40155405691 is a prime.

It is a super-2 number, since 2×40155471227² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40155471229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10729148 + ... + 10732889.

It is an arithmetic number, because the mean of its divisors is an integer number (10044233784).

Almost surely, 2^40155471227 is an apocalyptic number.

40155471227 is a deficient number, since it is larger than the sum of its proper divisors (21463909).

40155471227 is a wasteful number, since it uses less digits than its factorization.

40155471227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21463908.

The product of its (nonzero) digits is 78400, while the sum is 38.

The spelling of 40155471227 in words is "forty billion, one hundred fifty-five million, four hundred seventy-one thousand, two hundred twenty-seven".