205045156500 has 48 divisors (see below), whose sum is σ = 597091500096. Its totient is φ = 54678708000.

The previous prime is 205045156499. The next prime is 205045156501. The reversal of 205045156500 is 5651540502.

It is an interprime number because it is at equal distance from previous prime (205045156499) and next prime (205045156501).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205045156501) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68346886 + ... + 68349885.

It is an arithmetic number, because the mean of its divisors is an integer number (12439406252).

Almost surely, 2^205045156500 is an apocalyptic number.

205045156500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

205045156500 is an abundant number, since it is smaller than the sum of its proper divisors (392046343596).

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

205045156500 is a wasteful number, since it uses less digits than its factorization.

205045156500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136696793 (or 136696781 counting only the distinct ones).

The product of its (nonzero) digits is 30000, while the sum is 33.

The spelling of 205045156500 in words is "two hundred five billion, forty-five million, one hundred fifty-six thousand, five hundred".