205010077508 has 12 divisors (see below), whose sum is σ = 379871614332. Its totient is φ = 96475330560.

The previous prime is 205010077507. The next prime is 205010077541. The reversal of 205010077508 is 805770010502.

It can be written as a sum of positive squares in 2 ways, for example, as 62124565504 + 142885512004 = 249248^2 + 378002^2 .

It is not an unprimeable number, because it can be changed into a prime (205010077507) 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, 1507426973 + ... + 1507427108.

It is an arithmetic number, because the mean of its divisors is an integer number (31655967861).

Almost surely, 2^205010077508 is an apocalyptic number.

It is an amenable number.

205010077508 is a deficient number, since it is larger than the sum of its proper divisors (174861536824).

205010077508 is a wasteful number, since it uses less digits than its factorization.

205010077508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3014854102 (or 3014854100 counting only the distinct ones).

The product of its (nonzero) digits is 19600, while the sum is 35.

The spelling of 205010077508 in words is "two hundred five billion, ten million, seventy-seven thousand, five hundred eight".