351077841781 has 2 divisors, whose sum is σ = 351077841782. Its totient is φ = 351077841780.

The previous prime is 351077841773. The next prime is 351077841809. The reversal of 351077841781 is 187148770153.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 228444805681 + 122633036100 = 477959^2 + 350190^2 .

It is a cyclic number.

It is not a de Polignac number, because 351077841781 - 2³ = 351077841773 is a prime.

It is a super-2 number, since 2×351077841781² (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 (351077851781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 175538920890 + 175538920891.

It is an arithmetic number, because the mean of its divisors is an integer number (175538920891).

Almost surely, 2^351077841781 is an apocalyptic number.

It is an amenable number.

351077841781 is a deficient number, since it is larger than the sum of its proper divisors (1).

351077841781 is an equidigital number, since it uses as much as digits as its factorization.

351077841781 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1317120, while the sum is 52.

The spelling of 351077841781 in words is "three hundred fifty-one billion, seventy-seven million, eight hundred forty-one thousand, seven hundred eighty-one".