15552042421547 has 2 divisors, whose sum is σ = 15552042421548. Its totient is φ = 15552042421546.

The previous prime is 15552042421523. The next prime is 15552042421577. The reversal of 15552042421547 is 74512424025551.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 15552042421547 - 2⁶ = 15552042421483 is a prime.

It is not a weakly prime, because it can be changed into another prime (15552042421577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7776021210773 + 7776021210774.

It is an arithmetic number, because the mean of its divisors is an integer number (7776021210774).

Almost surely, 2^{15552042421547} is an apocalyptic number.

15552042421547 is a deficient number, since it is larger than the sum of its proper divisors (1).

15552042421547 is an equidigital number, since it uses as much as digits as its factorization.

15552042421547 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2240000, while the sum is 47.

The spelling of 15552042421547 in words is "fifteen trillion, five hundred fifty-two billion, forty-two million, four hundred twenty-one thousand, five hundred forty-seven".