145723953733 has 4 divisors (see below), whose sum is σ = 148473462348. Its totient is φ = 142974445120.

The previous prime is 145723953719. The next prime is 145723953827. The reversal of 145723953733 is 337359327541.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 61753244004 + 83970709729 = 248502^2 + 289777^2 .

It is a de Polignac number, because none of the positive numbers 2^k-145723953733 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 (145723953703) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1374754228 + ... + 1374754333.

It is an arithmetic number, because the mean of its divisors is an integer number (37118365587).

Almost surely, 2^145723953733 is an apocalyptic number.

It is an amenable number.

145723953733 is a deficient number, since it is larger than the sum of its proper divisors (2749508615).

145723953733 is an equidigital number, since it uses as much as digits as its factorization.

145723953733 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2749508614.

The product of its digits is 7144200, while the sum is 52.

The spelling of 145723953733 in words is "one hundred forty-five billion, seven hundred twenty-three million, nine hundred fifty-three thousand, seven hundred thirty-three".