157146028709 has 2 divisors, whose sum is σ = 157146028710. Its totient is φ = 157146028708.

The previous prime is 157146028693. The next prime is 157146028747. The reversal of 157146028709 is 907820641751.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 138907526209 + 18238502500 = 372703^2 + 135050^2 .

It is a cyclic number.

It is not a de Polignac number, because 157146028709 - 2⁴ = 157146028693 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (157146028789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78573014354 + 78573014355.

It is an arithmetic number, because the mean of its divisors is an integer number (78573014355).

Almost surely, 2^157146028709 is an apocalyptic number.

It is an amenable number.

157146028709 is a deficient number, since it is larger than the sum of its proper divisors (1).

157146028709 is an equidigital number, since it uses as much as digits as its factorization.

157146028709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 846720, while the sum is 50.

The spelling of 157146028709 in words is "one hundred fifty-seven billion, one hundred forty-six million, twenty-eight thousand, seven hundred nine".