151891560209 has 2 divisors, whose sum is σ = 151891560210. Its totient is φ = 151891560208.

The previous prime is 151891560193. The next prime is 151891560251. The reversal of 151891560209 is 902065198151.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 90240160000 + 61651400209 = 300400^2 + 248297^2 .

It is a cyclic number.

It is not a de Polignac number, because 151891560209 - 2⁴ = 151891560193 is a prime.

It is not a weakly prime, because it can be changed into another prime (151891560809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75945780104 + 75945780105.

It is an arithmetic number, because the mean of its divisors is an integer number (75945780105).

Almost surely, 2^151891560209 is an apocalyptic number.

It is an amenable number.

151891560209 is a deficient number, since it is larger than the sum of its proper divisors (1).

151891560209 is an equidigital number, since it uses as much as digits as its factorization.

151891560209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 194400, while the sum is 47.

The spelling of 151891560209 in words is "one hundred fifty-one billion, eight hundred ninety-one million, five hundred sixty thousand, two hundred nine".