133685228502 has 192 divisors, whose sum is σ = 351526256640. Its totient is φ = 35867966400.

The previous prime is 133685228459. The next prime is 133685228519. The reversal of 133685228502 is 205822586331.

133685228502 is a `hidden beast` number, since 1 + 3 + 368 + 5 + 2 + 285 + 0 + 2 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 193465977 + ... + 193466667.

It is an arithmetic number, because the mean of its divisors is an integer number (1830865920).

Almost surely, 2^133685228502 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 133685228502, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (175763128320).

133685228502 is an abundant number, since it is smaller than the sum of its proper divisors (217841028138).

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

133685228502 is a wasteful number, since it uses less digits than its factorization.

133685228502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1319 (or 1316 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 45.

The spelling of 133685228502 in words is "one hundred thirty-three billion, six hundred eighty-five million, two hundred twenty-eight thousand, five hundred two".