133866857128371 has 16 divisors (see below), whose sum is σ = 178649002168320. Its totient is φ = 89164646138880.

The previous prime is 133866857128337. The next prime is 133866857128399. The reversal of 133866857128371 is 173821758668331.

It is not a de Polignac number, because 133866857128371 - 2²¹ = 133866855031219 is a prime.

It is a super-2 number, since 2×133866857128371² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 133866857128296 and 133866857128305.

It is not an unprimeable number, because it can be changed into a prime (133866857128871) 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, 125928286 + ... + 126986876.

It is an arithmetic number, because the mean of its divisors is an integer number (11165562635520).

Almost surely, 2^{133866857128371} is an apocalyptic number.

133866857128371 is a deficient number, since it is larger than the sum of its proper divisors (44782145039949).

133866857128371 is a wasteful number, since it uses less digits than its factorization.

133866857128371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1096306.

The product of its digits is 243855360, while the sum is 69.

The spelling of 133866857128371 in words is "one hundred thirty-three trillion, eight hundred sixty-six billion, eight hundred fifty-seven million, one hundred twenty-eight thousand, three hundred seventy-one".