305100020550 has 96 divisors (see below), whose sum is σ = 827014067712. Its totient is φ = 73980593280.

The previous prime is 305100020539. The next prime is 305100020633. The reversal of 305100020550 is 55020001503.

It is a super-2 number, since 2×305100020550² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1036974 + ... + 1298273.

It is an arithmetic number, because the mean of its divisors is an integer number (8614729872).

Almost surely, 2^305100020550 is an apocalyptic number.

305100020550 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

305100020550 is an abundant number, since it is smaller than the sum of its proper divisors (521914047162).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

305100020550 is a wasteful number, since it uses less digits than its factorization.

305100020550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2335342 (or 2335337 counting only the distinct ones).

The product of its (nonzero) digits is 750, while the sum is 21.

The spelling of 305100020550 in words is "three hundred five billion, one hundred million, twenty thousand, five hundred fifty".