34644161557 has 2 divisors, whose sum is σ = 34644161558. Its totient is φ = 34644161556.

The previous prime is 34644161551. The next prime is 34644161581. The reversal of 34644161557 is 75516144643.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32483213361 + 2160948196 = 180231^2 + 46486^2 .

It is a cyclic number.

It is not a de Polignac number, because 34644161557 - 2¹¹ = 34644159509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (34644161551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17322080778 + 17322080779.

It is an arithmetic number, because the mean of its divisors is an integer number (17322080779).

Almost surely, 2^34644161557 is an apocalyptic number.

It is an amenable number.

34644161557 is a deficient number, since it is larger than the sum of its proper divisors (1).

34644161557 is an equidigital number, since it uses as much as digits as its factorization.

34644161557 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1209600, while the sum is 46.

The spelling of 34644161557 in words is "thirty-four billion, six hundred forty-four million, one hundred sixty-one thousand, five hundred fifty-seven".