134091721439 has 8 divisors (see below), whose sum is σ = 144700582992. Its totient is φ = 123524876160.

The previous prime is 134091721433. The next prime is 134091721441. The reversal of 134091721439 is 934127190431.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-134091721439 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 134091721439.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (134091721433) 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, 10497434 + ... + 10510199.

It is an arithmetic number, because the mean of its divisors is an integer number (18087572874).

Almost surely, 2^134091721439 is an apocalyptic number.

134091721439 is a deficient number, since it is larger than the sum of its proper divisors (10608861553).

134091721439 is a wasteful number, since it uses less digits than its factorization.

134091721439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21008137.

The product of its (nonzero) digits is 163296, while the sum is 44.

The spelling of 134091721439 in words is "one hundred thirty-four billion, ninety-one million, seven hundred twenty-one thousand, four hundred thirty-nine".