145327009999 has 32 divisors (see below), whose sum is σ = 161389800000. Its totient is φ = 130275164160.

The previous prime is 145327009951. The next prime is 145327010011. The reversal of 145327009999 is 999900723541.

It is a cyclic number.

It is not a de Polignac number, because 145327009999 - 2⁷ = 145327009871 is a prime.

It is a super-2 number, since 2×145327009999² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145327007999) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8935627 + ... + 8951875.

It is an arithmetic number, because the mean of its divisors is an integer number (5043431250).

Almost surely, 2^145327009999 is an apocalyptic number.

145327009999 is a deficient number, since it is larger than the sum of its proper divisors (16062790001).

145327009999 is a wasteful number, since it uses less digits than its factorization.

145327009999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16603.

The product of its (nonzero) digits is 5511240, while the sum is 58.

The spelling of 145327009999 in words is "one hundred forty-five billion, three hundred twenty-seven million, nine thousand, nine hundred ninety-nine".