134564601521 has 8 divisors (see below), whose sum is σ = 153791292480. Its totient is φ = 115338704688.

The previous prime is 134564601511. The next prime is 134564601599. The reversal of 134564601521 is 125106465431.

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 134564601521 - 2²² = 134560407217 is a prime.

It is not an unprimeable number, because it can be changed into a prime (134564601511) 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, 224750 + ... + 565368.

It is an arithmetic number, because the mean of its divisors is an integer number (19223911560).

Almost surely, 2^134564601521 is an apocalyptic number.

It is an amenable number.

134564601521 is a deficient number, since it is larger than the sum of its proper divisors (19226690959).

134564601521 is an equidigital number, since it uses as much as digits as its factorization.

134564601521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 397063.

The product of its (nonzero) digits is 86400, while the sum is 38.

The spelling of 134564601521 in words is "one hundred thirty-four billion, five hundred sixty-four million, six hundred one thousand, five hundred twenty-one".