40033729123 has 4 divisors (see below), whose sum is σ = 41115721840. Its totient is φ = 38951736408.

The previous prime is 40033729111. The next prime is 40033729159. The reversal of 40033729123 is 32192733004.

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 40033729123 - 2²¹ = 40031631971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40033769123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 540996303 + ... + 540996376.

It is an arithmetic number, because the mean of its divisors is an integer number (10278930460).

Almost surely, 2^40033729123 is an apocalyptic number.

40033729123 is a deficient number, since it is larger than the sum of its proper divisors (1081992717).

40033729123 is a wasteful number, since it uses less digits than its factorization.

40033729123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1081992716.

The product of its (nonzero) digits is 27216, while the sum is 34.

The spelling of 40033729123 in words is "forty billion, thirty-three million, seven hundred twenty-nine thousand, one hundred twenty-three".