134439022691 has 4 divisors (see below), whose sum is σ = 134440281384. Its totient is φ = 134437764000.

The previous prime is 134439022637. The next prime is 134439022709. The reversal of 134439022691 is 196220934431.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 134439022691 - 2²⁶ = 134371913827 is a prime.

It is a super-2 number, since 2×134439022691² (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 (134439052691) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 452585 + ... + 688266.

It is an arithmetic number, because the mean of its divisors is an integer number (33610070346).

Almost surely, 2^134439022691 is an apocalyptic number.

134439022691 is a deficient number, since it is larger than the sum of its proper divisors (1258693).

134439022691 is a wasteful number, since it uses less digits than its factorization.

134439022691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1258692.

The product of its (nonzero) digits is 279936, while the sum is 44.

The spelling of 134439022691 in words is "one hundred thirty-four billion, four hundred thirty-nine million, twenty-two thousand, six hundred ninety-one".