40155004643 has 16 divisors (see below), whose sum is σ = 45867360000. Its totient is φ = 34847223840.

The previous prime is 40155004613. The next prime is 40155004697. The reversal of 40155004643 is 34640055104.

It is not a de Polignac number, because 40155004643 - 2¹⁴ = 40154988259 is a prime.

It is a super-2 number, since 2×40155004643² (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 (40155004613) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 588143 + ... + 652856.

It is an arithmetic number, because the mean of its divisors is an integer number (2866710000).

Almost surely, 2^40155004643 is an apocalyptic number.

40155004643 is a deficient number, since it is larger than the sum of its proper divisors (5712355357).

40155004643 is a wasteful number, since it uses less digits than its factorization.

40155004643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1241162.

The product of its (nonzero) digits is 28800, while the sum is 32.

Adding to 40155004643 its reverse (34640055104), we get a palindrome (74795059747).

The spelling of 40155004643 in words is "forty billion, one hundred fifty-five million, four thousand, six hundred forty-three".