145671045469 has 2 divisors, whose sum is σ = 145671045470. Its totient is φ = 145671045468.

The previous prime is 145671045463. The next prime is 145671045497. The reversal of 145671045469 is 964540176541.

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., 109213725625 + 36457319844 = 330475^2 + 190938^2 .

It is a cyclic number.

It is not a de Polignac number, because 145671045469 - 2³ = 145671045461 is a prime.

It is a super-2 number, since 2×145671045469² (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 (145671045461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72835522734 + 72835522735.

It is an arithmetic number, because the mean of its divisors is an integer number (72835522735).

Almost surely, 2^145671045469 is an apocalyptic number.

It is an amenable number.

145671045469 is a deficient number, since it is larger than the sum of its proper divisors (1).

145671045469 is an equidigital number, since it uses as much as digits as its factorization.

145671045469 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3628800, while the sum is 52.

The spelling of 145671045469 in words is "one hundred forty-five billion, six hundred seventy-one million, forty-five thousand, four hundred sixty-nine".