157676478397 has 2 divisors, whose sum is σ = 157676478398. Its totient is φ = 157676478396.

The previous prime is 157676478367. The next prime is 157676478413. The reversal of 157676478397 is 793874676751.

It is a happy number.

157676478397 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 144510981316 + 13165497081 = 380146^2 + 114741^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-157676478397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (157676478367) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78838239198 + 78838239199.

It is an arithmetic number, because the mean of its divisors is an integer number (78838239199).

Almost surely, 2^157676478397 is an apocalyptic number.

It is an amenable number.

157676478397 is a deficient number, since it is larger than the sum of its proper divisors (1).

157676478397 is an equidigital number, since it uses as much as digits as its factorization.

157676478397 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 373403520, while the sum is 70.

The spelling of 157676478397 in words is "one hundred fifty-seven billion, six hundred seventy-six million, four hundred seventy-eight thousand, three hundred ninety-seven".