134438140478 has 8 divisors (see below), whose sum is σ = 201659299920. Its totient is φ = 67218373840.

The previous prime is 134438140477. The next prime is 134438140519. The reversal of 134438140478 is 874041834431.

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

It is a super-2 number, since 2×134438140478² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (134438140477) 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, 58778 + ... + 521853.

It is an arithmetic number, because the mean of its divisors is an integer number (25207412490).

Almost surely, 2^134438140478 is an apocalyptic number.

134438140478 is a deficient number, since it is larger than the sum of its proper divisors (67221159442).

134438140478 is a wasteful number, since it uses less digits than its factorization.

134438140478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 696402.

The product of its (nonzero) digits is 1032192, while the sum is 47.

The spelling of 134438140478 in words is "one hundred thirty-four billion, four hundred thirty-eight million, one hundred forty thousand, four hundred seventy-eight".