151321403504209 has 2 divisors, whose sum is σ = 151321403504210. Its totient is φ = 151321403504208.

The previous prime is 151321403504129. The next prime is 151321403504267. The reversal of 151321403504209 is 902405304123151.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 128037371929600 + 23284031574609 = 11315360^2 + 4825353^2 .

It is a cyclic number.

It is not a de Polignac number, because 151321403504209 - 2⁴³ = 142525310482001 is a prime.

It is not a weakly prime, because it can be changed into another prime (151321403504809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75660701752104 + 75660701752105.

It is an arithmetic number, because the mean of its divisors is an integer number (75660701752105).

Almost surely, 2^{151321403504209} is an apocalyptic number.

It is an amenable number.

151321403504209 is a deficient number, since it is larger than the sum of its proper divisors (1).

151321403504209 is an equidigital number, since it uses as much as digits as its factorization.

151321403504209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 129600, while the sum is 40.

The spelling of 151321403504209 in words is "one hundred fifty-one trillion, three hundred twenty-one billion, four hundred three million, five hundred four thousand, two hundred nine".