2154344165265 has 8 divisors (see below), whose sum is σ = 3446950664448. Its totient is φ = 1148983554800.

The previous prime is 2154344165251. The next prime is 2154344165299. The reversal of 2154344165265 is 5625614434512.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2154344165265 - 2⁸ = 2154344165009 is a prime.

It is a super-2 number, since 2×2154344165265² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71811472161 + ... + 71811472190.

It is an arithmetic number, because the mean of its divisors is an integer number (430868833056).

Almost surely, 2^{2154344165265} is an apocalyptic number.

It is an amenable number.

2154344165265 is a deficient number, since it is larger than the sum of its proper divisors (1292606499183).

2154344165265 is a wasteful number, since it uses less digits than its factorization.

2154344165265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143622944359.

The product of its digits is 3456000, while the sum is 48.

Adding to 2154344165265 its reverse (5625614434512), we get a palindrome (7779958599777).

The spelling of 2154344165265 in words is "two trillion, one hundred fifty-four billion, three hundred forty-four million, one hundred sixty-five thousand, two hundred sixty-five".