133280631936 has 96 divisors (see below), whose sum is σ = 386328840300. Its totient is φ = 44102541312.

The previous prime is 133280631893. The next prime is 133280631949. The reversal of 133280631936 is 639136082331.

133280631936 is a `hidden beast` number, since 1 + 3 + 3 + 2 + 8 + 0 + 631 + 9 + 3 + 6 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 115736040000 + 17544591936 = 340200^2 + 132456^2 .

It is a tau number, because it is divible by the number of its divisors (96).

It is a junction number, because it is equal to n+sod(n) for n = 133280631891 and 133280631900.

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, 264421 + ... + 580068.

Almost surely, 2^133280631936 is an apocalyptic number.

133280631936 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

133280631936 is an abundant number, since it is smaller than the sum of its proper divisors (253048208364).

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

133280631936 is a wasteful number, since it uses less digits than its factorization.

133280631936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 844646 (or 844631 counting only the distinct ones).

The product of its (nonzero) digits is 419904, while the sum is 45.

The spelling of 133280631936 in words is "one hundred thirty-three billion, two hundred eighty million, six hundred thirty-one thousand, nine hundred thirty-six".