204051242451 has 16 divisors (see below), whose sum is σ = 311032770048. Its totient is φ = 116564131200.

The previous prime is 204051242449. The next prime is 204051242453. The reversal of 204051242451 is 154242150402.

It is an interprime number because it is at equal distance from previous prime (204051242449) and next prime (204051242453).

It is not a de Polignac number, because 204051242451 - 2¹ = 204051242449 is a prime.

It is not an unprimeable number, because it can be changed into a prime (204051242453) 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, 1455510 + ... + 1589531.

It is an arithmetic number, because the mean of its divisors is an integer number (19439548128).

Almost surely, 2^204051242451 is an apocalyptic number.

204051242451 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

204051242451 is a deficient number, since it is larger than the sum of its proper divisors (106981527597).

204051242451 is a wasteful number, since it uses less digits than its factorization.

204051242451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3048242.

The product of its (nonzero) digits is 12800, while the sum is 30.

Adding to 204051242451 its reverse (154242150402), we get a palindrome (358293392853).

The spelling of 204051242451 in words is "two hundred four billion, fifty-one million, two hundred forty-two thousand, four hundred fifty-one".