159640551647 has 2 divisors, whose sum is σ = 159640551648. Its totient is φ = 159640551646.

The previous prime is 159640551589. The next prime is 159640551709. The reversal of 159640551647 is 746155046951.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 159640551647 - 2¹⁶ = 159640486111 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (159640551247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79820275823 + 79820275824.

It is an arithmetic number, because the mean of its divisors is an integer number (79820275824).

Almost surely, 2^159640551647 is an apocalyptic number.

159640551647 is a deficient number, since it is larger than the sum of its proper divisors (1).

159640551647 is an equidigital number, since it uses as much as digits as its factorization.

159640551647 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4536000, while the sum is 53.

The spelling of 159640551647 in words is "one hundred fifty-nine billion, six hundred forty million, five hundred fifty-one thousand, six hundred forty-seven".