2139012165465 has 32 divisors (see below), whose sum is σ = 4345929480960. Its totient is φ = 977834132352.

The previous prime is 2139012165419. The next prime is 2139012165523. The reversal of 2139012165465 is 5645612109312.

It is a happy number.

2139012165465 is a `hidden beast` number, since 2 + 1 + 3 + 9 + 0 + 121 + 65 + 465 = 666.

It is not a de Polignac number, because 2139012165465 - 2⁷ = 2139012165337 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 2139012165465.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1131751524 + ... + 1131753413.

It is an arithmetic number, because the mean of its divisors is an integer number (135810296280).

Almost surely, 2^{2139012165465} is an apocalyptic number.

It is an amenable number.

2139012165465 is an abundant number, since it is smaller than the sum of its proper divisors (2206917315495).

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

2139012165465 is a wasteful number, since it uses less digits than its factorization.

2139012165465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2263504958 (or 2263504952 counting only the distinct ones).

The product of its (nonzero) digits is 388800, while the sum is 45.

The spelling of 2139012165465 in words is "two trillion, one hundred thirty-nine billion, twelve million, one hundred sixty-five thousand, four hundred sixty-five".