134398721745 has 64 divisors (see below), whose sum is σ = 245631732480. Its totient is φ = 69672960000.

The previous prime is 134398721741. The next prime is 134398721759. The reversal of 134398721745 is 547127893431.

134398721745 is a `hidden beast` number, since 1 + 34 + 398 + 7 + 217 + 4 + 5 = 666.

It is not a de Polignac number, because 134398721745 - 2² = 134398721741 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 134398721691 and 134398721700.

It is not an unprimeable number, because it can be changed into a prime (134398721741) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5236945 + ... + 5262545.

It is an arithmetic number, because the mean of its divisors is an integer number (3837995820).

Almost surely, 2^134398721745 is an apocalyptic number.

134398721745 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

134398721745 is a deficient number, since it is larger than the sum of its proper divisors (111233010735).

134398721745 is a wasteful number, since it uses less digits than its factorization.

134398721745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26703 (or 26697 counting only the distinct ones).

The product of its digits is 5080320, while the sum is 54.

The spelling of 134398721745 in words is "one hundred thirty-four billion, three hundred ninety-eight million, seven hundred twenty-one thousand, seven hundred forty-five".