145423452320399 has 32 divisors (see below), whose sum is σ = 166813028370432. Its totient is φ = 125579315520000.

The previous prime is 145423452320387. The next prime is 145423452320417. The reversal of 145423452320399 is 993023254324541.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145423452320399 is a prime.

It is a super-2 number, since 2×145423452320399² (a number of 29 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 (145423452320339) 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, 1808387 + ... + 17149844.

It is an arithmetic number, because the mean of its divisors is an integer number (5212907136576).

Almost surely, 2^{145423452320399} is an apocalyptic number.

145423452320399 is a deficient number, since it is larger than the sum of its proper divisors (21389576050033).

145423452320399 is a wasteful number, since it uses less digits than its factorization.

145423452320399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18958727.

The product of its (nonzero) digits is 27993600, while the sum is 56.

The spelling of 145423452320399 in words is "one hundred forty-five trillion, four hundred twenty-three billion, four hundred fifty-two million, three hundred twenty thousand, three hundred ninety-nine".