16547338257551 has 2 divisors, whose sum is σ = 16547338257552. Its totient is φ = 16547338257550.

The previous prime is 16547338257533. The next prime is 16547338257559. The reversal of 16547338257551 is 15575283374561.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 16547338257551 - 2³⁸ = 16272460350607 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16547338257559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8273669128775 + 8273669128776.

It is an arithmetic number, because the mean of its divisors is an integer number (8273669128776).

Almost surely, 2^{16547338257551} is an apocalyptic number.

16547338257551 is a deficient number, since it is larger than the sum of its proper divisors (1).

16547338257551 is an equidigital number, since it uses as much as digits as its factorization.

16547338257551 is an evil number, because the sum of its binary digits is even.

The product of its digits is 105840000, while the sum is 62.

The spelling of 16547338257551 in words is "sixteen trillion, five hundred forty-seven billion, three hundred thirty-eight million, two hundred fifty-seven thousand, five hundred fifty-one".