145564673660999 has 16 divisors (see below), whose sum is σ = 148356440295840. Its totient is φ = 142783990863360.

The previous prime is 145564673660969. The next prime is 145564673661031. The reversal of 145564673660999 is 999066376465541.

It is a cyclic number.

It is not a de Polignac number, because 145564673660999 - 2⁸ = 145564673660743 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145564673660969) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62673929 + ... + 64954989.

It is an arithmetic number, because the mean of its divisors is an integer number (9272277518490).

Almost surely, 2^{145564673660999} is an apocalyptic number.

145564673660999 is a deficient number, since it is larger than the sum of its proper divisors (2791766634841).

145564673660999 is a wasteful number, since it uses less digits than its factorization.

145564673660999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2283490.

The product of its (nonzero) digits is 7936185600, while the sum is 80.

The spelling of 145564673660999 in words is "one hundred forty-five trillion, five hundred sixty-four billion, six hundred seventy-three million, six hundred sixty thousand, nine hundred ninety-nine".