145112520401 has 4 divisors (see below), whose sum is σ = 145113951600. Its totient is φ = 145111089204.

The previous prime is 145112520389. The next prime is 145112520403. The reversal of 145112520401 is 104025211541.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 104025211541 = 31907 ⋅3260263.

It is a cyclic number.

It is not a de Polignac number, because 145112520401 - 2¹⁸ = 145112258257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145112520403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 550871 + ... + 770508.

It is an arithmetic number, because the mean of its divisors is an integer number (36278487900).

Almost surely, 2^145112520401 is an apocalyptic number.

It is an amenable number.

145112520401 is a deficient number, since it is larger than the sum of its proper divisors (1431199).

145112520401 is a wasteful number, since it uses less digits than its factorization.

145112520401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1431198.

The product of its (nonzero) digits is 1600, while the sum is 26.

Adding to 145112520401 its reverse (104025211541), we get a palindrome (249137731942).

The spelling of 145112520401 in words is "one hundred forty-five billion, one hundred twelve million, five hundred twenty thousand, four hundred one".