40277539129 has 4 divisors (see below), whose sum is σ = 40320895860. Its totient is φ = 40234182400.

The previous prime is 40277539109. The next prime is 40277539171. The reversal of 40277539129 is 92193577204.

It is a happy number.

40277539129 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.

It can be written as a sum of positive squares in 2 ways, for example, as 14125797904 + 26151741225 = 118852^2 + 161715^2 .

It is a cyclic number.

It is not a de Polignac number, because 40277539129 - 2⁹ = 40277538617 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40277539109) 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, 21676972 + ... + 21678829.

It is an arithmetic number, because the mean of its divisors is an integer number (10080223965).

Almost surely, 2^40277539129 is an apocalyptic number.

It is an amenable number.

40277539129 is a deficient number, since it is larger than the sum of its proper divisors (43356731).

40277539129 is an equidigital number, since it uses as much as digits as its factorization.

40277539129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43356730.

The product of its (nonzero) digits is 952560, while the sum is 49.

The spelling of 40277539129 in words is "forty billion, two hundred seventy-seven million, five hundred thirty-nine thousand, one hundred twenty-nine".