157629472909 has 2 divisors, whose sum is σ = 157629472910. Its totient is φ = 157629472908.

The previous prime is 157629472901. The next prime is 157629472927. The reversal of 157629472909 is 909274926751.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 131384500900 + 26244972009 = 362470^2 + 162003^2 .

It is a cyclic number.

It is not a de Polignac number, because 157629472909 - 2³ = 157629472901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (157629472901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78814736454 + 78814736455.

It is an arithmetic number, because the mean of its divisors is an integer number (78814736455).

Almost surely, 2^157629472909 is an apocalyptic number.

It is an amenable number.

157629472909 is a deficient number, since it is larger than the sum of its proper divisors (1).

157629472909 is an equidigital number, since it uses as much as digits as its factorization.

157629472909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17146080, while the sum is 61.

The spelling of 157629472909 in words is "one hundred fifty-seven billion, six hundred twenty-nine million, four hundred seventy-two thousand, nine hundred nine".