18047142551 has 2 divisors, whose sum is σ = 18047142552. Its totient is φ = 18047142550.

The previous prime is 18047142541. The next prime is 18047142577. The reversal of 18047142551 is 15524174081.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18047142551 - 2³⁴ = 867273367 is a prime.

It is a super-2 number, since 2×18047142551² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18047142541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9023571275 + 9023571276.

It is an arithmetic number, because the mean of its divisors is an integer number (9023571276).

Almost surely, 2^18047142551 is an apocalyptic number.

18047142551 is a deficient number, since it is larger than the sum of its proper divisors (1).

18047142551 is an equidigital number, since it uses as much as digits as its factorization.

18047142551 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 44800, while the sum is 38.

The spelling of 18047142551 in words is "eighteen billion, forty-seven million, one hundred forty-two thousand, five hundred fifty-one".