347511780061 has 2 divisors, whose sum is σ = 347511780062. Its totient is φ = 347511780060.

The previous prime is 347511780037. The next prime is 347511780131. The reversal of 347511780061 is 160087115743.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 347414757561 + 97022500 = 589419^2 + 9850^2 .

It is a cyclic number.

It is not a de Polignac number, because 347511780061 - 2¹³ = 347511771869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (347511780761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 173755890030 + 173755890031.

It is an arithmetic number, because the mean of its divisors is an integer number (173755890031).

Almost surely, 2^347511780061 is an apocalyptic number.

It is an amenable number.

347511780061 is a deficient number, since it is larger than the sum of its proper divisors (1).

347511780061 is an equidigital number, since it uses as much as digits as its factorization.

347511780061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 141120, while the sum is 43.

The spelling of 347511780061 in words is "three hundred forty-seven billion, five hundred eleven million, seven hundred eighty thousand, sixty-one".