249608000051 has 2 divisors, whose sum is σ = 249608000052. Its totient is φ = 249608000050.

The previous prime is 249608000009. The next prime is 249608000077. The reversal of 249608000051 is 150000806942.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 249608000051 - 2²² = 249603805747 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 249607999975 and 249608000020.

It is not a weakly prime, because it can be changed into another prime (249608000951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124804000025 + 124804000026.

It is an arithmetic number, because the mean of its divisors is an integer number (124804000026).

Almost surely, 2^249608000051 is an apocalyptic number.

249608000051 is a deficient number, since it is larger than the sum of its proper divisors (1).

249608000051 is an equidigital number, since it uses as much as digits as its factorization.

249608000051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17280, while the sum is 35.

Adding to 249608000051 its reverse (150000806942), we get a palindrome (399608806993).

The spelling of 249608000051 in words is "two hundred forty-nine billion, six hundred eight million, fifty-one", and thus it is an aban number.