165120622004465 has 16 divisors (see below), whose sum is σ = 207184293427968. Its totient is φ = 126093719480256.

The previous prime is 165120622004461. The next prime is 165120622004489. The reversal of 165120622004465 is 564400226021561.

It is a cyclic number.

It is not a de Polignac number, because 165120622004465 - 2² = 165120622004461 is a prime.

It is a super-2 number, since 2×165120622004465² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (165120622004461) 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, 1474103642 + ... + 1474215651.

It is an arithmetic number, because the mean of its divisors is an integer number (12949018339248).

Almost surely, 2^{165120622004465} is an apocalyptic number.

It is an amenable number.

165120622004465 is a deficient number, since it is larger than the sum of its proper divisors (42063671423503).

165120622004465 is a wasteful number, since it uses less digits than its factorization.

165120622004465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2948319808.

The product of its (nonzero) digits is 691200, while the sum is 44.

The spelling of 165120622004465 in words is "one hundred sixty-five trillion, one hundred twenty billion, six hundred twenty-two million, four thousand, four hundred sixty-five".