145138138178 has 16 divisors (see below), whose sum is σ = 237556053504. Its totient is φ = 65955969360.

The previous prime is 145138138157. The next prime is 145138138181. The reversal of 145138138178 is 871831831541.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 702050 + ... + 884957.

It is an arithmetic number, because the mean of its divisors is an integer number (14847253344).

Almost surely, 2^145138138178 is an apocalyptic number.

145138138178 is a deficient number, since it is larger than the sum of its proper divisors (92417915326).

145138138178 is a wasteful number, since it uses less digits than its factorization.

145138138178 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1591177.

The product of its digits is 645120, while the sum is 50.

The spelling of 145138138178 in words is "one hundred forty-five billion, one hundred thirty-eight million, one hundred thirty-eight thousand, one hundred seventy-eight".