157321422673 has 2 divisors, whose sum is σ = 157321422674. Its totient is φ = 157321422672.

The previous prime is 157321422611. The next prime is 157321422751. The reversal of 157321422673 is 376224123751.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 147154330449 + 10167092224 = 383607^2 + 100832^2 .

It is a cyclic number.

It is not a de Polignac number, because 157321422673 - 2⁹ = 157321422161 is a prime.

It is not a weakly prime, because it can be changed into another prime (157321420673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78660711336 + 78660711337.

It is an arithmetic number, because the mean of its divisors is an integer number (78660711337).

Almost surely, 2^157321422673 is an apocalyptic number.

It is an amenable number.

157321422673 is a deficient number, since it is larger than the sum of its proper divisors (1).

157321422673 is an equidigital number, since it uses as much as digits as its factorization.

157321422673 is an evil number, because the sum of its binary digits is even.

The product of its digits is 423360, while the sum is 43.

The spelling of 157321422673 in words is "one hundred fifty-seven billion, three hundred twenty-one million, four hundred twenty-two thousand, six hundred seventy-three".