205006241222651 has 16 divisors (see below), whose sum is σ = 223765255219968. Its totient is φ = 186267583101600.

The previous prime is 205006241222623. The next prime is 205006241222677. The reversal of 205006241222651 is 156222142600502.

It is not a de Polignac number, because 205006241222651 - 2²⁶ = 205006174113787 is a prime.

It is not an unprimeable number, because it can be changed into a prime (205006241221651) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 498555506 + ... + 498966536.

It is an arithmetic number, because the mean of its divisors is an integer number (13985328451248).

Almost surely, 2^{205006241222651} is an apocalyptic number.

205006241222651 is a deficient number, since it is larger than the sum of its proper divisors (18759013997317).

205006241222651 is a wasteful number, since it uses less digits than its factorization.

205006241222651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 435682.

The product of its (nonzero) digits is 115200, while the sum is 38.

The spelling of 205006241222651 in words is "two hundred five trillion, six billion, two hundred forty-one million, two hundred twenty-two thousand, six hundred fifty-one".