40507729989 has 4 divisors (see below), whose sum is σ = 54010306656. Its totient is φ = 27005153324.

The previous prime is 40507729987. The next prime is 40507730009. The reversal of 40507729989 is 98992770504.

40507729989 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 40507729989 - 2¹ = 40507729987 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40507729987) 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, 6751288329 + ... + 6751288334.

It is an arithmetic number, because the mean of its divisors is an integer number (13502576664).

Almost surely, 2^40507729989 is an apocalyptic number.

It is an amenable number.

40507729989 is a deficient number, since it is larger than the sum of its proper divisors (13502576667).

40507729989 is a wasteful number, since it uses less digits than its factorization.

40507729989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13502576666.

The product of its (nonzero) digits is 11430720, while the sum is 60.

The spelling of 40507729989 in words is "forty billion, five hundred seven million, seven hundred twenty-nine thousand, nine hundred eighty-nine".