133474728561984 has 84 divisors (see below), whose sum is σ = 382945227930720. Its totient is φ = 44449243372800.

The previous prime is 133474728561973. The next prime is 133474728562001. The reversal of 133474728561984 is 489165827474331.

It is a happy number.

133474728561984 is a `hidden beast` number, since 1 + 3 + 3 + 4 + 7 + 472 + 8 + 5 + 61 + 98 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

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, 109635804 + ... + 110846555.

It is an arithmetic number, because the mean of its divisors is an integer number (4558871761080).

Almost surely, 2^{133474728561984} is an apocalyptic number.

It is an amenable number.

133474728561984 is an abundant number, since it is smaller than the sum of its proper divisors (249470499368736).

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

133474728561984 is a wasteful number, since it uses less digits than its factorization.

133474728561984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220483428 (or 220483415 counting only the distinct ones).

The product of its digits is 975421440, while the sum is 72.

The spelling of 133474728561984 in words is "one hundred thirty-three trillion, four hundred seventy-four billion, seven hundred twenty-eight million, five hundred sixty-one thousand, nine hundred eighty-four".