133687087056 has 30 divisors (see below), whose sum is σ = 374138167650. Its totient is φ = 44562362304.

The previous prime is 133687087031. The next prime is 133687087067. The reversal of 133687087056 is 650780786331.

It can be written as a sum of positive squares in only one way, i.e., 127063731600 + 6623355456 = 356460^2 + 81384^2 .

It is a junction number, because it is equal to n+sod(n) for n = 133687086993 and 133687087011.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 464191131 + ... + 464191418.

It is an arithmetic number, because the mean of its divisors is an integer number (12471272255).

Almost surely, 2^133687087056 is an apocalyptic number.

133687087056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

133687087056 is an abundant number, since it is smaller than the sum of its proper divisors (240451080594).

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

133687087056 is a wasteful number, since it uses less digits than its factorization.

133687087056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 928382563 (or 928382554 counting only the distinct ones).

The product of its (nonzero) digits is 5080320, while the sum is 54.

The spelling of 133687087056 in words is "one hundred thirty-three billion, six hundred eighty-seven million, eighty-seven thousand, fifty-six".