609256741381 has 2 divisors, whose sum is σ = 609256741382. Its totient is φ = 609256741380.

The previous prime is 609256741309. The next prime is 609256741403. The reversal of 609256741381 is 183147652906.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 608502964356 + 753777025 = 780066^2 + 27455^2 .

It is a cyclic number.

It is not a de Polignac number, because 609256741381 - 2⁷ = 609256741253 is a prime.

It is a super-2 number, since 2×609256741381² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (609256741081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 304628370690 + 304628370691.

It is an arithmetic number, because the mean of its divisors is an integer number (304628370691).

It is a 1-persistent number, because it is pandigital, but 2⋅609256741381 = 1218513482762 is not.

Almost surely, 2^609256741381 is an apocalyptic number.

It is an amenable number.

609256741381 is a deficient number, since it is larger than the sum of its proper divisors (1).

609256741381 is an equidigital number, since it uses as much as digits as its factorization.

609256741381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2177280, while the sum is 52.

The spelling of 609256741381 in words is "six hundred nine billion, two hundred fifty-six million, seven hundred forty-one thousand, three hundred eighty-one".