31734678554128 has 20 divisors (see below), whose sum is σ = 67075570580688. Its totient is φ = 14424853888160.

The previous prime is 31734678554119. The next prime is 31734678554153. The reversal of 31734678554128 is 82145587643713.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 31734678554128.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 90155336626 + ... + 90155336977.

Almost surely, 2^{31734678554128} is an apocalyptic number.

It is an amenable number.

31734678554128 is an abundant number, since it is smaller than the sum of its proper divisors (35340892026560).

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

31734678554128 is a wasteful number, since it uses less digits than its factorization.

31734678554128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180310673622 (or 180310673616 counting only the distinct ones).

The product of its digits is 135475200, while the sum is 64.

The spelling of 31734678554128 in words is "thirty-one trillion, seven hundred thirty-four billion, six hundred seventy-eight million, five hundred fifty-four thousand, one hundred twenty-eight".