205114149639 has 64 divisors (see below), whose sum is σ = 353261977600. Its totient is φ = 115203625056.

The previous prime is 205114149613. The next prime is 205114149641. The reversal of 205114149639 is 936941411502.

205114149639 is a `hidden beast` number, since 2 + 0 + 5 + 1 + 1 + 4 + 1 + 4 + 9 + 639 = 666.

It is not a de Polignac number, because 205114149639 - 2¹² = 205114145543 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 205114149594 and 205114149603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205114149139) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3298812 + ... + 3360414.

It is an arithmetic number, because the mean of its divisors is an integer number (5519718400).

Almost surely, 2^205114149639 is an apocalyptic number.

205114149639 is a deficient number, since it is larger than the sum of its proper divisors (148147827961).

205114149639 is a wasteful number, since it uses less digits than its factorization.

205114149639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61921 (or 61915 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 45.

The spelling of 205114149639 in words is "two hundred five billion, one hundred fourteen million, one hundred forty-nine thousand, six hundred thirty-nine".