145407273405 has 8 divisors (see below), whose sum is σ = 232651637472. Its totient is φ = 77550545808.

The previous prime is 145407273397. The next prime is 145407273437. The reversal of 145407273405 is 504372704541.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 145407273405 - 2³ = 145407273397 is a prime.

It is a super-2 number, since 2×145407273405² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4846909099 + ... + 4846909128.

It is an arithmetic number, because the mean of its divisors is an integer number (29081454684).

Almost surely, 2^145407273405 is an apocalyptic number.

145407273405 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

145407273405 is a deficient number, since it is larger than the sum of its proper divisors (87244364067).

145407273405 is an equidigital number, since it uses as much as digits as its factorization.

145407273405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9693818235.

The product of its (nonzero) digits is 470400, while the sum is 42.

Adding to 145407273405 its reverse (504372704541), we get a palindrome (649779977946).

The spelling of 145407273405 in words is "one hundred forty-five billion, four hundred seven million, two hundred seventy-three thousand, four hundred five".