133680023811 has 8 divisors (see below), whose sum is σ = 198044479760. Its totient is φ = 89120015856.

The previous prime is 133680023779. The next prime is 133680023837. The reversal of 133680023811 is 118320086331.

133680023811 is a `hidden beast` number, since 1 + 336 + 80 + 0 + 238 + 11 = 666.

It is not a de Polignac number, because 133680023811 - 2⁵ = 133680023779 is a prime.

It is a super-2 number, since 2×133680023811² (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 (133680043811) 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, 2475555970 + ... + 2475556023.

It is an arithmetic number, because the mean of its divisors is an integer number (24755559970).

Almost surely, 2^133680023811 is an apocalyptic number.

133680023811 is a deficient number, since it is larger than the sum of its proper divisors (64364455949).

133680023811 is an equidigital number, since it uses as much as digits as its factorization.

133680023811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4951112002 (or 4951111996 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The spelling of 133680023811 in words is "one hundred thirty-three billion, six hundred eighty million, twenty-three thousand, eight hundred eleven".