151656081509 has 2 divisors, whose sum is σ = 151656081510. Its totient is φ = 151656081508.

The previous prime is 151656081503. The next prime is 151656081529. The reversal of 151656081509 is 905180656151.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 129399917284 + 22256164225 = 359722^2 + 149185^2 .

It is an emirp because it is prime and its reverse (905180656151) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 151656081509 - 2¹² = 151656077413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (151656081503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75828040754 + 75828040755.

It is an arithmetic number, because the mean of its divisors is an integer number (75828040755).

Almost surely, 2^151656081509 is an apocalyptic number.

It is an amenable number.

151656081509 is a deficient number, since it is larger than the sum of its proper divisors (1).

151656081509 is an equidigital number, since it uses as much as digits as its factorization.

151656081509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 324000, while the sum is 47.

The spelling of 151656081509 in words is "one hundred fifty-one billion, six hundred fifty-six million, eighty-one thousand, five hundred nine".