151161821257 has 2 divisors, whose sum is σ = 151161821258. Its totient is φ = 151161821256.

The previous prime is 151161821243. The next prime is 151161821287. The reversal of 151161821257 is 752128161151.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 127321226041 + 23840595216 = 356821^2 + 154404^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-151161821257 is a prime.

It is not a weakly prime, because it can be changed into another prime (151161821287) 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, 75580910628 + 75580910629.

It is an arithmetic number, because the mean of its divisors is an integer number (75580910629).

Almost surely, 2^151161821257 is an apocalyptic number.

It is an amenable number.

151161821257 is a deficient number, since it is larger than the sum of its proper divisors (1).

151161821257 is an equidigital number, since it uses as much as digits as its factorization.

151161821257 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 33600, while the sum is 40.

The spelling of 151161821257 in words is "one hundred fifty-one billion, one hundred sixty-one million, eight hundred twenty-one thousand, two hundred fifty-seven".