2081456515144 has 16 divisors (see below), whose sum is σ = 3903439734000. Its totient is φ = 1040539252752.

The previous prime is 2081456515121. The next prime is 2081456515153. The reversal of 2081456515144 is 4415156541802.

It is a happy number.

It is a super-2 number, since 2×2081456515144² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2081456515094 and 2081456515103.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23578794 + ... + 23666905.

It is an arithmetic number, because the mean of its divisors is an integer number (243964983375).

Almost surely, 2^{2081456515144} is an apocalyptic number.

It is an amenable number.

2081456515144 is a deficient number, since it is larger than the sum of its proper divisors (1821983218856).

2081456515144 is a wasteful number, since it uses less digits than its factorization.

2081456515144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47251212 (or 47251208 counting only the distinct ones).

The product of its (nonzero) digits is 768000, while the sum is 46.

The spelling of 2081456515144 in words is "two trillion, eighty-one billion, four hundred fifty-six million, five hundred fifteen thousand, one hundred forty-four".