129404894541 has 16 divisors (see below), whose sum is σ = 185818631040. Its totient is φ = 79631006400.

The previous prime is 129404894539. The next prime is 129404894543. The reversal of 129404894541 is 145498404921.

It is an interprime number because it is at equal distance from previous prime (129404894539) and next prime (129404894543).

It is not a de Polignac number, because 129404894541 - 2¹ = 129404894539 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129404894543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2032491 + ... + 2095191.

It is an arithmetic number, because the mean of its divisors is an integer number (11613664440).

Almost surely, 2^129404894541 is an apocalyptic number.

It is an amenable number.

129404894541 is a deficient number, since it is larger than the sum of its proper divisors (56413736499).

129404894541 is a wasteful number, since it uses less digits than its factorization.

129404894541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115636.

The product of its (nonzero) digits is 1658880, while the sum is 51.

The spelling of 129404894541 in words is "one hundred twenty-nine billion, four hundred four million, eight hundred ninety-four thousand, five hundred forty-one".