205550631030 has 64 divisors (see below), whose sum is σ = 522708318720. Its totient is φ = 51552843264.

The previous prime is 205550630969. The next prime is 205550631043. The reversal of 205550631030 is 30136055502.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 586551 + ... + 868989.

It is an arithmetic number, because the mean of its divisors is an integer number (8167317480).

Almost surely, 2^205550631030 is an apocalyptic number.

205550631030 is an abundant number, since it is smaller than the sum of its proper divisors (317157687690).

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

205550631030 is a wasteful number, since it uses less digits than its factorization.

205550631030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283893.

The product of its (nonzero) digits is 13500, while the sum is 30.

Adding to 205550631030 its reverse (30136055502), we get a palindrome (235686686532).

The spelling of 205550631030 in words is "two hundred five billion, five hundred fifty million, six hundred thirty-one thousand, thirty".