2154518040145 has 16 divisors (see below), whose sum is σ = 2618396352000. Its totient is φ = 1701635427648.

The previous prime is 2154518040119. The next prime is 2154518040179. The reversal of 2154518040145 is 5410408154512.

It is a cyclic number.

It is not a de Polignac number, because 2154518040145 - 2⁵ = 2154518040113 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2154518040098 and 2154518040107.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4008876 + ... + 4514434.

It is an arithmetic number, because the mean of its divisors is an integer number (163649772000).

Almost surely, 2^{2154518040145} is an apocalyptic number.

It is an amenable number.

2154518040145 is a deficient number, since it is larger than the sum of its proper divisors (463878311855).

2154518040145 is a wasteful number, since it uses less digits than its factorization.

2154518040145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 516432.

The product of its (nonzero) digits is 128000, while the sum is 40.

The spelling of 2154518040145 in words is "two trillion, one hundred fifty-four billion, five hundred eighteen million, forty thousand, one hundred forty-five".