204724993751 has 2 divisors, whose sum is σ = 204724993752. Its totient is φ = 204724993750.

The previous prime is 204724993667. The next prime is 204724993769. The reversal of 204724993751 is 157399427402.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-204724993751 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 204724993693 and 204724993702.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (204724990751) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102362496875 + 102362496876.

It is an arithmetic number, because the mean of its divisors is an integer number (102362496876).

Almost surely, 2^204724993751 is an apocalyptic number.

204724993751 is a deficient number, since it is larger than the sum of its proper divisors (1).

204724993751 is an equidigital number, since it uses as much as digits as its factorization.

204724993751 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3810240, while the sum is 53.

The spelling of 204724993751 in words is "two hundred four billion, seven hundred twenty-four million, nine hundred ninety-three thousand, seven hundred fifty-one".