145513089989 has 2 divisors, whose sum is σ = 145513089990. Its totient is φ = 145513089988.

The previous prime is 145513089979. The next prime is 145513090003. The reversal of 145513089989 is 989980315541.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 119427609889 + 26085480100 = 345583^2 + 161510^2 .

It is a cyclic number.

It is not a de Polignac number, because 145513089989 - 2¹⁶ = 145513024453 is a prime.

It is a super-3 number, since 3×145513089989³ (a number of 34 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145513089979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72756544994 + 72756544995.

It is an arithmetic number, because the mean of its divisors is an integer number (72756544995).

Almost surely, 2^145513089989 is an apocalyptic number.

It is an amenable number.

145513089989 is a deficient number, since it is larger than the sum of its proper divisors (1).

145513089989 is an equidigital number, since it uses as much as digits as its factorization.

145513089989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13996800, while the sum is 62.

The spelling of 145513089989 in words is "one hundred forty-five billion, five hundred thirteen million, eighty-nine thousand, nine hundred eighty-nine".