133656383740 has 48 divisors (see below), whose sum is σ = 324206082144. Its totient is φ = 45743360000.

The previous prime is 133656383717. The next prime is 133656383743. The reversal of 133656383740 is 47383656331.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133656383743) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17864761 + ... + 17872240.

It is an arithmetic number, because the mean of its divisors is an integer number (6754293378).

Almost surely, 2^133656383740 is an apocalyptic number.

133656383740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133656383740 is an abundant number, since it is smaller than the sum of its proper divisors (190549698404).

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

133656383740 is a wasteful number, since it uses less digits than its factorization.

133656383740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35737038 (or 35737036 counting only the distinct ones).

The product of its (nonzero) digits is 3265920, while the sum is 49.

The spelling of 133656383740 in words is "one hundred thirty-three billion, six hundred fifty-six million, three hundred eighty-three thousand, seven hundred forty".