157033141981 has 2 divisors, whose sum is σ = 157033141982. Its totient is φ = 157033141980.

The previous prime is 157033141957. The next prime is 157033142059. The reversal of 157033141981 is 189141330751.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 150734180025 + 6298961956 = 388245^2 + 79366^2 .

It is a cyclic number.

It is not a de Polignac number, because 157033141981 - 2⁹ = 157033141469 is a prime.

It is a super-2 number, since 2×157033141981² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (157033141901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78516570990 + 78516570991.

It is an arithmetic number, because the mean of its divisors is an integer number (78516570991).

Almost surely, 2^157033141981 is an apocalyptic number.

It is an amenable number.

157033141981 is a deficient number, since it is larger than the sum of its proper divisors (1).

157033141981 is an equidigital number, since it uses as much as digits as its factorization.

157033141981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 90720, while the sum is 43.

The spelling of 157033141981 in words is "one hundred fifty-seven billion, thirty-three million, one hundred forty-one thousand, nine hundred eighty-one".