157146116534221 has 2 divisors, whose sum is σ = 157146116534222. Its totient is φ = 157146116534220.

The previous prime is 157146116534137. The next prime is 157146116534233. The reversal of 157146116534221 is 122435611641751.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 139227869864196 + 17918246670025 = 11799486^2 + 4232995^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-157146116534221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (157146816534221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78573058267110 + 78573058267111.

It is an arithmetic number, because the mean of its divisors is an integer number (78573058267111).

Almost surely, 2^{157146116534221} is an apocalyptic number.

It is an amenable number.

157146116534221 is a deficient number, since it is larger than the sum of its proper divisors (1).

157146116534221 is an equidigital number, since it uses as much as digits as its factorization.

157146116534221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1209600, while the sum is 49.

The spelling of 157146116534221 in words is "one hundred fifty-seven trillion, one hundred forty-six billion, one hundred sixteen million, five hundred thirty-four thousand, two hundred twenty-one".