165634425465135 has 128 divisors (see below), whose sum is σ = 298399646684160. Its totient is φ = 77756355379200.

The previous prime is 165634425465101. The next prime is 165634425465193. The reversal of 165634425465135 is 531564524436561.

It is a happy number.

165634425465135 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 165634425465135 - 2¹⁰ = 165634425464111 is a prime.

It is a super-2 number, since 2×165634425465135² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 3826756204 + ... + 3826799486.

It is an arithmetic number, because the mean of its divisors is an integer number (2331247239720).

Almost surely, 2^{165634425465135} is an apocalyptic number.

165634425465135 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

165634425465135 is a deficient number, since it is larger than the sum of its proper divisors (132765221219025).

165634425465135 is a wasteful number, since it uses less digits than its factorization.

165634425465135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47609.

The product of its digits is 155520000, while the sum is 60.

The spelling of 165634425465135 in words is "one hundred sixty-five trillion, six hundred thirty-four billion, four hundred twenty-five million, four hundred sixty-five thousand, one hundred thirty-five".