133198733387 has 8 divisors (see below), whose sum is σ = 141042774096. Its totient is φ = 125355672832.

The previous prime is 133198733383. The next prime is 133198733401. The reversal of 133198733387 is 783337891331.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 133198733387 - 2² = 133198733383 is a prime.

It is a super-2 number, since 2×133198733387² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133198733383) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44543 + ... + 518055.

It is an arithmetic number, because the mean of its divisors is an integer number (17630346762).

Almost surely, 2^133198733387 is an apocalyptic number.

133198733387 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

133198733387 is a deficient number, since it is larger than the sum of its proper divisors (7844040709).

133198733387 is a wasteful number, since it uses less digits than its factorization.

133198733387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 490077.

The product of its digits is 6858432, while the sum is 56.

The spelling of 133198733387 in words is "one hundred thirty-three billion, one hundred ninety-eight million, seven hundred thirty-three thousand, three hundred eighty-seven".