204620120051 has 4 divisors (see below), whose sum is σ = 204637083504. Its totient is φ = 204603156600.

The previous prime is 204620120009. The next prime is 204620120053. The reversal of 204620120051 is 150021026402.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 204620120051 - 2³⁴ = 187440250867 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 204620119999 and 204620120026.

It is not an unprimeable number, because it can be changed into a prime (204620120053) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8463620 + ... + 8487761.

It is an arithmetic number, because the mean of its divisors is an integer number (51159270876).

Almost surely, 2^204620120051 is an apocalyptic number.

204620120051 is a deficient number, since it is larger than the sum of its proper divisors (16963453).

204620120051 is a wasteful number, since it uses less digits than its factorization.

204620120051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16963452.

The product of its (nonzero) digits is 960, while the sum is 23.

Adding to 204620120051 its reverse (150021026402), we get a palindrome (354641146453).

The spelling of 204620120051 in words is "two hundred four billion, six hundred twenty million, one hundred twenty thousand, fifty-one".