159920478547 has 2 divisors, whose sum is σ = 159920478548. Its totient is φ = 159920478546.

The previous prime is 159920478539. The next prime is 159920478607. The reversal of 159920478547 is 745874029951.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 159920478547 - 2³ = 159920478539 is a prime.

It is not a weakly prime, because it can be changed into another prime (159920478527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79960239273 + 79960239274.

It is an arithmetic number, because the mean of its divisors is an integer number (79960239274).

Almost surely, 2^159920478547 is an apocalyptic number.

159920478547 is a deficient number, since it is larger than the sum of its proper divisors (1).

159920478547 is an equidigital number, since it uses as much as digits as its factorization.

159920478547 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25401600, while the sum is 61.

The spelling of 159920478547 in words is "one hundred fifty-nine billion, nine hundred twenty million, four hundred seventy-eight thousand, five hundred forty-seven".