133474428437257 has 2 divisors, whose sum is σ = 133474428437258. Its totient is φ = 133474428437256.

The previous prime is 133474428437213. The next prime is 133474428437291. The reversal of 133474428437257 is 752734824474331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 129869180672256 + 3605247765001 = 11396016^2 + 1898749^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133474428437257 is a prime.

It is not a weakly prime, because it can be changed into another prime (133474428437297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66737214218628 + 66737214218629.

It is an arithmetic number, because the mean of its divisors is an integer number (66737214218629).

Almost surely, 2^{133474428437257} is an apocalyptic number.

It is an amenable number.

133474428437257 is a deficient number, since it is larger than the sum of its proper divisors (1).

133474428437257 is an equidigital number, since it uses as much as digits as its factorization.

133474428437257 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 379330560, while the sum is 64.

The spelling of 133474428437257 in words is "one hundred thirty-three trillion, four hundred seventy-four billion, four hundred twenty-eight million, four hundred thirty-seven thousand, two hundred fifty-seven".