133235320040 has 32 divisors (see below), whose sum is σ = 299789959680. Its totient is φ = 53292263232.

The previous prime is 133235320033. The next prime is 133235320061. The reversal of 133235320040 is 40023532331.

It is a happy number.

It is a super-2 number, since 2×133235320040² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 133235319991 and 133235320009.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1975109 + ... + 2041451.

It is an arithmetic number, because the mean of its divisors is an integer number (9368436240).

Almost surely, 2^133235320040 is an apocalyptic number.

133235320040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133235320040 is an abundant number, since it is smaller than the sum of its proper divisors (166554639640).

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

133235320040 is a wasteful number, since it uses less digits than its factorization.

133235320040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116561 (or 116557 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 26.

Adding to 133235320040 its reverse (40023532331), we get a palindrome (173258852371).

The spelling of 133235320040 in words is "one hundred thirty-three billion, two hundred thirty-five million, three hundred twenty thousand, forty".