133545544615640 has 16 divisors (see below), whose sum is σ = 300477475385280. Its totient is φ = 53418217846240.

The previous prime is 133545544615601. The next prime is 133545544615649. The reversal of 133545544615640 is 46516445545331.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133545544615649) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1669319307656 + ... + 1669319307735.

It is an arithmetic number, because the mean of its divisors is an integer number (18779842211580).

Almost surely, 2^{133545544615640} is an apocalyptic number.

133545544615640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133545544615640 is an abundant number, since it is smaller than the sum of its proper divisors (166931930769640).

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

133545544615640 is a wasteful number, since it uses less digits than its factorization.

133545544615640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3338638615402 (or 3338638615398 counting only the distinct ones).

The product of its (nonzero) digits is 51840000, while the sum is 56.

The spelling of 133545544615640 in words is "one hundred thirty-three trillion, five hundred forty-five billion, five hundred forty-four million, six hundred fifteen thousand, six hundred forty".