145949197678 has 32 divisors (see below), whose sum is σ = 227331307008. Its totient is φ = 70238124000.

The previous prime is 145949197673. The next prime is 145949197741. The reversal of 145949197678 is 876791949541.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145949197673) 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 15 ways as a sum of consecutive naturals, for example, 1175151 + ... + 1293397.

It is an arithmetic number, because the mean of its divisors is an integer number (7104103344).

Almost surely, 2^145949197678 is an apocalyptic number.

145949197678 is a deficient number, since it is larger than the sum of its proper divisors (81382109330).

145949197678 is a wasteful number, since it uses less digits than its factorization.

145949197678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118528.

The product of its digits is 137168640, while the sum is 70.

The spelling of 145949197678 in words is "one hundred forty-five billion, nine hundred forty-nine million, one hundred ninety-seven thousand, six hundred seventy-eight".