134007557721 has 16 divisors (see below), whose sum is σ = 191581920000. Its totient is φ = 83018827008.

The previous prime is 134007557699. The next prime is 134007557729. The reversal of 134007557721 is 127755700431.

It is not a de Polignac number, because 134007557721 - 2¹⁵ = 134007524953 is a prime.

It is not an unprimeable number, because it can be changed into a prime (134007557729) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16626346 + ... + 16634403.

It is an arithmetic number, because the mean of its divisors is an integer number (11973870000).

Almost surely, 2^134007557721 is an apocalyptic number.

It is an amenable number.

134007557721 is a deficient number, since it is larger than the sum of its proper divisors (57574362279).

134007557721 is a wasteful number, since it uses less digits than its factorization.

134007557721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33260848.

The product of its (nonzero) digits is 205800, while the sum is 42.

The spelling of 134007557721 in words is "one hundred thirty-four billion, seven million, five hundred fifty-seven thousand, seven hundred twenty-one".