134721496639 has 2 divisors, whose sum is σ = 134721496640. Its totient is φ = 134721496638.

The previous prime is 134721496633. The next prime is 134721496751. The reversal of 134721496639 is 936694127431.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 134721496639 - 2³ = 134721496631 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 134721496639.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (134721496631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67360748319 + 67360748320.

It is an arithmetic number, because the mean of its divisors is an integer number (67360748320).

Almost surely, 2^134721496639 is an apocalyptic number.

134721496639 is a deficient number, since it is larger than the sum of its proper divisors (1).

134721496639 is an equidigital number, since it uses as much as digits as its factorization.

134721496639 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5878656, while the sum is 55.

The spelling of 134721496639 in words is "one hundred thirty-four billion, seven hundred twenty-one million, four hundred ninety-six thousand, six hundred thirty-nine".