145138071507 has 16 divisors (see below), whose sum is σ = 227349147648. Its totient is φ = 81196123680.

The previous prime is 145138071493. The next prime is 145138071539. The reversal of 145138071507 is 705170831541.

It is a de Polignac number, because none of the positive numbers 2^k-145138071507 is a prime.

It is not an unprimeable number, because it can be changed into a prime (145138071907) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 169158163 + ... + 169159020.

It is an arithmetic number, because the mean of its divisors is an integer number (14209321728).

Almost surely, 2^145138071507 is an apocalyptic number.

145138071507 is a deficient number, since it is larger than the sum of its proper divisors (82211076141).

145138071507 is a wasteful number, since it uses less digits than its factorization.

145138071507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 338317210.

The product of its (nonzero) digits is 117600, while the sum is 42.

The spelling of 145138071507 in words is "one hundred forty-five billion, one hundred thirty-eight million, seventy-one thousand, five hundred seven".