205155700010 has 16 divisors (see below), whose sum is σ = 369355420800. Its totient is φ = 82045577616.

The previous prime is 205155699953. The next prime is 205155700021. The reversal of 205155700010 is 10007551502.

It is a happy number.

It is a super-2 number, since 2×205155700010² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2036150 + ... + 2134529.

It is an arithmetic number, because the mean of its divisors is an integer number (23084713800).

Almost surely, 2^205155700010 is an apocalyptic number.

205155700010 is a deficient number, since it is larger than the sum of its proper divisors (164199720790).

205155700010 is a wasteful number, since it uses less digits than its factorization.

205155700010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4175605.

The product of its (nonzero) digits is 1750, while the sum is 26.

The spelling of 205155700010 in words is "two hundred five billion, one hundred fifty-five million, seven hundred thousand, ten".