133745681610 has 48 divisors (see below), whose sum is σ = 347889784320. Its totient is φ = 35650026720.

The previous prime is 133745681599. The next prime is 133745681659. The reversal of 133745681610 is 16186547331.

133745681610 is a `hidden beast` number, since 1 + 3 + 3 + 74 + 568 + 1 + 6 + 10 = 666.

133745681610 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 113530 + ... + 529509.

It is an arithmetic number, because the mean of its divisors is an integer number (7247703840).

Almost surely, 2^133745681610 is an apocalyptic number.

133745681610 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

133745681610 is an abundant number, since it is smaller than the sum of its proper divisors (214144102710).

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

133745681610 is a wasteful number, since it uses less digits than its factorization.

133745681610 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 645363 (or 645360 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

The spelling of 133745681610 in words is "one hundred thirty-three billion, seven hundred forty-five million, six hundred eighty-one thousand, six hundred ten".