205131150102 has 32 divisors (see below), whose sum is σ = 413445441024. Its totient is φ = 67846656800.

The previous prime is 205131150083. The next prime is 205131150149. The reversal of 205131150102 is 201051131502.

It is a super-2 number, since 2×205131150102² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11648368 + ... + 11665964.

It is an arithmetic number, because the mean of its divisors is an integer number (12920170032).

Almost surely, 2^205131150102 is an apocalyptic number.

205131150102 is an abundant number, since it is smaller than the sum of its proper divisors (208314290922).

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

205131150102 is a wasteful number, since it uses less digits than its factorization.

205131150102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32564.

The product of its (nonzero) digits is 300, while the sum is 21.

Adding to 205131150102 its reverse (201051131502), we get a palindrome (406182281604).

The spelling of 205131150102 in words is "two hundred five billion, one hundred thirty-one million, one hundred fifty thousand, one hundred two".