40155243511 has 8 divisors (see below), whose sum is σ = 42341944880. Its totient is φ = 37975868928.

The previous prime is 40155243509. The next prime is 40155243523. The reversal of 40155243511 is 11534255104.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 40155243511 - 2¹ = 40155243509 is a prime.

It is a super-2 number, since 2×40155243511² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40155243811) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1820436 + ... + 1842361.

It is an arithmetic number, because the mean of its divisors is an integer number (5292743110).

Almost surely, 2^40155243511 is an apocalyptic number.

40155243511 is a deficient number, since it is larger than the sum of its proper divisors (2186701369).

40155243511 is a wasteful number, since it uses less digits than its factorization.

40155243511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3663393.

The product of its (nonzero) digits is 12000, while the sum is 31.

Adding to 40155243511 its reverse (11534255104), we get a palindrome (51689498615).

The spelling of 40155243511 in words is "forty billion, one hundred fifty-five million, two hundred forty-three thousand, five hundred eleven".