154608578978 has 24 divisors (see below), whose sum is σ = 269826158592. Its totient is φ = 66248547624.

The previous prime is 154608578953. The next prime is 154608578987. The reversal of 154608578978 is 879875806451.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 395951 + ... + 682637.

It is an arithmetic number, because the mean of its divisors is an integer number (11242756608).

Almost surely, 2^154608578978 is an apocalyptic number.

154608578978 is a deficient number, since it is larger than the sum of its proper divisors (115217579614).

154608578978 is a wasteful number, since it uses less digits than its factorization.

154608578978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 292206 (or 292199 counting only the distinct ones).

The product of its (nonzero) digits is 135475200, while the sum is 68.

The spelling of 154608578978 in words is "one hundred fifty-four billion, six hundred eight million, five hundred seventy-eight thousand, nine hundred seventy-eight".