157409771215439 has 2 divisors, whose sum is σ = 157409771215440. Its totient is φ = 157409771215438.

The previous prime is 157409771215343. The next prime is 157409771215471. The reversal of 157409771215439 is 934512177904751.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-157409771215439 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (157409771211439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78704885607719 + 78704885607720.

It is an arithmetic number, because the mean of its divisors is an integer number (78704885607720).

Almost surely, 2^{157409771215439} is an apocalyptic number.

157409771215439 is a deficient number, since it is larger than the sum of its proper divisors (1).

157409771215439 is an equidigital number, since it uses as much as digits as its factorization.

157409771215439 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 66679200, while the sum is 65.

The spelling of 157409771215439 in words is "one hundred fifty-seven trillion, four hundred nine billion, seven hundred seventy-one million, two hundred fifteen thousand, four hundred thirty-nine".