159087046661 has 2 divisors, whose sum is σ = 159087046662. Its totient is φ = 159087046660.

The previous prime is 159087046649. The next prime is 159087046693. The reversal of 159087046661 is 166640780951.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 139509720100 + 19577326561 = 373510^2 + 139919^2 .

It is a cyclic number.

It is not a de Polignac number, because 159087046661 - 2¹⁸ = 159086784517 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (159087046621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79543523330 + 79543523331.

It is an arithmetic number, because the mean of its divisors is an integer number (79543523331).

Almost surely, 2^159087046661 is an apocalyptic number.

It is an amenable number.

159087046661 is a deficient number, since it is larger than the sum of its proper divisors (1).

159087046661 is an equidigital number, since it uses as much as digits as its factorization.

159087046661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2177280, while the sum is 53.

The spelling of 159087046661 in words is "one hundred fifty-nine billion, eighty-seven million, forty-six thousand, six hundred sixty-one".