145138257007 has 4 divisors (see below), whose sum is σ = 150143024520. Its totient is φ = 140133489496.

The previous prime is 145138257001. The next prime is 145138257059. The reversal of 145138257007 is 700752831541.

145138257007 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 700752831541 = 7 ⋅100107547363.

It is a cyclic number.

It is not a de Polignac number, because 145138257007 - 2²³ = 145129868399 is a prime.

It is a super-2 number, since 2×145138257007² (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 (145138257001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2502383713 + ... + 2502383770.

It is an arithmetic number, because the mean of its divisors is an integer number (37535756130).

Almost surely, 2^145138257007 is an apocalyptic number.

145138257007 is a deficient number, since it is larger than the sum of its proper divisors (5004767513).

145138257007 is an equidigital number, since it uses as much as digits as its factorization.

145138257007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5004767512.

The product of its (nonzero) digits is 235200, while the sum is 43.

The spelling of 145138257007 in words is "one hundred forty-five billion, one hundred thirty-eight million, two hundred fifty-seven thousand, seven".