134773421999 has 4 divisors (see below), whose sum is σ = 137640941664. Its totient is φ = 131905902336.

The previous prime is 134773421963. The next prime is 134773422029. The reversal of 134773421999 is 999124377431.

It is a happy number.

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 134773421999 - 2¹⁶ = 134773356463 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (134773421099) 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, 1433759762 + ... + 1433759855.

It is an arithmetic number, because the mean of its divisors is an integer number (34410235416).

Almost surely, 2^134773421999 is an apocalyptic number.

134773421999 is a deficient number, since it is larger than the sum of its proper divisors (2867519665).

134773421999 is an equidigital number, since it uses as much as digits as its factorization.

134773421999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2867519664.

The product of its digits is 10287648, while the sum is 59.

The spelling of 134773421999 in words is "one hundred thirty-four billion, seven hundred seventy-three million, four hundred twenty-one thousand, nine hundred ninety-nine".