133768591651 has 2 divisors, whose sum is σ = 133768591652. Its totient is φ = 133768591650.

The previous prime is 133768591643. The next prime is 133768591751. The reversal of 133768591651 is 156195867331.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 133768591651 - 2³ = 133768591643 is a prime.

It is a super-2 number, since 2×133768591651² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 133768591592 and 133768591601.

It is not a weakly prime, because it can be changed into another prime (133768591631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66884295825 + 66884295826.

It is an arithmetic number, because the mean of its divisors is an integer number (66884295826).

Almost surely, 2^133768591651 is an apocalyptic number.

133768591651 is a deficient number, since it is larger than the sum of its proper divisors (1).

133768591651 is an equidigital number, since it uses as much as digits as its factorization.

133768591651 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4082400, while the sum is 55.

The spelling of 133768591651 in words is "one hundred thirty-three billion, seven hundred sixty-eight million, five hundred ninety-one thousand, six hundred fifty-one".