134621640667 has 2 divisors, whose sum is σ = 134621640668. Its totient is φ = 134621640666.

The previous prime is 134621640661. The next prime is 134621640683. The reversal of 134621640667 is 766046126431.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-134621640667 is a prime.

It is a super-2 number, since 2×134621640667² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (134621640661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67310820333 + 67310820334.

It is an arithmetic number, because the mean of its divisors is an integer number (67310820334).

Almost surely, 2^134621640667 is an apocalyptic number.

134621640667 is a deficient number, since it is larger than the sum of its proper divisors (1).

134621640667 is an equidigital number, since it uses as much as digits as its factorization.

134621640667 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 870912, while the sum is 46.

The spelling of 134621640667 in words is "one hundred thirty-four billion, six hundred twenty-one million, six hundred forty thousand, six hundred sixty-seven".