145317939629 has 2 divisors, whose sum is σ = 145317939630. Its totient is φ = 145317939628.

The previous prime is 145317939589. The next prime is 145317939653. The reversal of 145317939629 is 926939713541.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 126044170729 + 19273768900 = 355027^2 + 138830^2 .

It is an emirp because it is prime and its reverse (926939713541) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 145317939629 - 2¹² = 145317935533 is a prime.

It is a super-2 number, since 2×145317939629² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145317939029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72658969814 + 72658969815.

It is an arithmetic number, because the mean of its divisors is an integer number (72658969815).

Almost surely, 2^145317939629 is an apocalyptic number.

It is an amenable number.

145317939629 is a deficient number, since it is larger than the sum of its proper divisors (1).

145317939629 is an equidigital number, since it uses as much as digits as its factorization.

145317939629 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11022480, while the sum is 59.

The spelling of 145317939629 in words is "one hundred forty-five billion, three hundred seventeen million, nine hundred thirty-nine thousand, six hundred twenty-nine".