134400345520 has 40 divisors (see below), whose sum is σ = 357120919584. Its totient is φ = 46080118272.

The previous prime is 134400345503. The next prime is 134400345529. The reversal of 134400345520 is 25543004431.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (134400345529) 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, 119999749 + ... + 120000868.

Almost surely, 2^134400345520 is an apocalyptic number.

134400345520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

134400345520 is an abundant number, since it is smaller than the sum of its proper divisors (222720574064).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

134400345520 is a wasteful number, since it uses less digits than its factorization.

134400345520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240000637 (or 240000631 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 31.

Adding to 134400345520 its reverse (25543004431), we get a palindrome (159943349951).

The spelling of 134400345520 in words is "one hundred thirty-four billion, four hundred million, three hundred forty-five thousand, five hundred twenty".