153861878634 has 16 divisors (see below), whose sum is σ = 309334878720. Its totient is φ = 51018772640.

The previous prime is 153861878629. The next prime is 153861878683. The reversal of 153861878634 is 436878168351.

153861878634 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (60) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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, 67128819 + ... + 67131110.

It is an arithmetic number, because the mean of its divisors is an integer number (19333429920).

Almost surely, 2^153861878634 is an apocalyptic number.

153861878634 is an abundant number, since it is smaller than the sum of its proper divisors (155473000086).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

153861878634 is a wasteful number, since it uses less digits than its factorization.

153861878634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134260125.

The product of its digits is 23224320, while the sum is 60.

The spelling of 153861878634 in words is "one hundred fifty-three billion, eight hundred sixty-one million, eight hundred seventy-eight thousand, six hundred thirty-four".