305253028029 has 4 divisors (see below), whose sum is σ = 407004037376. Its totient is φ = 203502018684.

The previous prime is 305253028021. The next prime is 305253028057. The reversal of 305253028029 is 920820352503.

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 not a de Polignac number, because 305253028029 - 2³ = 305253028021 is a prime.

It is a super-2 number, since 2×305253028029² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (305253028021) 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, 50875504669 + ... + 50875504674.

It is an arithmetic number, because the mean of its divisors is an integer number (101751009344).

Almost surely, 2^305253028029 is an apocalyptic number.

It is an amenable number.

305253028029 is a deficient number, since it is larger than the sum of its proper divisors (101751009347).

305253028029 is a wasteful number, since it uses less digits than its factorization.

305253028029 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101751009346.

The product of its (nonzero) digits is 129600, while the sum is 39.

The spelling of 305253028029 in words is "three hundred five billion, two hundred fifty-three million, twenty-eight thousand, twenty-nine".