145855327129 has 4 divisors (see below), whose sum is σ = 145856664576. Its totient is φ = 145853989684.

The previous prime is 145855327061. The next prime is 145855327133. The reversal of 145855327129 is 921723558541.

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 145855327129 - 2⁷ = 145855327001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145855327139) 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, 489049 + ... + 728614.

It is an arithmetic number, because the mean of its divisors is an integer number (36464166144).

Almost surely, 2^145855327129 is an apocalyptic number.

It is an amenable number.

145855327129 is a deficient number, since it is larger than the sum of its proper divisors (1337447).

145855327129 is a wasteful number, since it uses less digits than its factorization.

145855327129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1337446.

The product of its digits is 3024000, while the sum is 52.

The spelling of 145855327129 in words is "one hundred forty-five billion, eight hundred fifty-five million, three hundred twenty-seven thousand, one hundred twenty-nine".