40401538754129 has 4 divisors (see below), whose sum is σ = 46173187147584. Its totient is φ = 34629890360676.

The previous prime is 40401538754099. The next prime is 40401538754141. The reversal of 40401538754129 is 92145783510404.

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 a de Polignac number, because none of the positive numbers 2^k-40401538754129 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (40401538754429) 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, 2885824196717 + ... + 2885824196730.

It is an arithmetic number, because the mean of its divisors is an integer number (11543296786896).

Almost surely, 2^{40401538754129} is an apocalyptic number.

It is an amenable number.

40401538754129 is a deficient number, since it is larger than the sum of its proper divisors (5771648393455).

40401538754129 is an equidigital number, since it uses as much as digits as its factorization.

40401538754129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5771648393454.

The product of its (nonzero) digits is 4838400, while the sum is 53.

The spelling of 40401538754129 in words is "forty trillion, four hundred one billion, five hundred thirty-eight million, seven hundred fifty-four thousand, one hundred twenty-nine".