205121432510 has 8 divisors (see below), whose sum is σ = 369218578536. Its totient is φ = 82048573000.

The previous prime is 205121432479. The next prime is 205121432567. The reversal of 205121432510 is 15234121502.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 205121432510.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10256071616 + ... + 10256071635.

It is an arithmetic number, because the mean of its divisors is an integer number (46152322317).

Almost surely, 2^205121432510 is an apocalyptic number.

205121432510 is a deficient number, since it is larger than the sum of its proper divisors (164097146026).

205121432510 is a wasteful number, since it uses less digits than its factorization.

205121432510 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20512143258.

The product of its (nonzero) digits is 2400, while the sum is 26.

The spelling of 205121432510 in words is "two hundred five billion, one hundred twenty-one million, four hundred thirty-two thousand, five hundred ten".