134978558857 has 8 divisors (see below), whose sum is σ = 137933715456. Its totient is φ = 132026872032.

The previous prime is 134978558849. The next prime is 134978558947. The reversal of 134978558857 is 758855879431.

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

It is a cyclic number.

It is not a de Polignac number, because 134978558857 - 2³ = 134978558849 is a prime.

It is a super-2 number, since 2×134978558857² (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 (134978558807) 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, 788713 + ... + 944470.

It is an arithmetic number, because the mean of its divisors is an integer number (17241714432).

Almost surely, 2^134978558857 is an apocalyptic number.

It is an amenable number.

134978558857 is a deficient number, since it is larger than the sum of its proper divisors (2955156599).

134978558857 is a wasteful number, since it uses less digits than its factorization.

134978558857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1734887.

The product of its digits is 338688000, while the sum is 70.

The spelling of 134978558857 in words is "one hundred thirty-four billion, nine hundred seventy-eight million, five hundred fifty-eight thousand, eight hundred fifty-seven".