129267855445 has 8 divisors (see below), whose sum is σ = 155146715136. Its totient is φ = 103397425296.

The previous prime is 129267855433. The next prime is 129267855467. The reversal of 129267855445 is 544558762921.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 129267855445 - 2³⁵ = 94908117077 is a prime.

It is a super-2 number, since 2×129267855445² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 129267855445.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2073597 + ... + 2135026.

It is an arithmetic number, because the mean of its divisors is an integer number (19393339392).

Almost surely, 2^129267855445 is an apocalyptic number.

It is an amenable number.

129267855445 is a deficient number, since it is larger than the sum of its proper divisors (25878859691).

129267855445 is an equidigital number, since it uses as much as digits as its factorization.

129267855445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4214771.

The product of its digits is 24192000, while the sum is 58.

The spelling of 129267855445 in words is "one hundred twenty-nine billion, two hundred sixty-seven million, eight hundred fifty-five thousand, four hundred forty-five".