2054155821544 has 16 divisors (see below), whose sum is σ = 3851560027620. Its totient is φ = 1027073147520.

The previous prime is 2054155821533. The next prime is 2054155821581. The reversal of 2054155821544 is 4451285514502.

It can be written as a sum of positive squares in 2 ways, for example, as 1878988460644 + 175167360900 = 1370762^2 + 418530^2 .

It is a super-2 number, since 2×2054155821544² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2054155821494 and 2054155821503.

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, 1808164 + ... + 2716204.

Almost surely, 2^{2054155821544} is an apocalyptic number.

It is an amenable number.

2054155821544 is a deficient number, since it is larger than the sum of its proper divisors (1797404206076).

2054155821544 is a wasteful number, since it uses less digits than its factorization.

2054155821544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1190820 (or 1190816 counting only the distinct ones).

The product of its (nonzero) digits is 1280000, while the sum is 46.

The spelling of 2054155821544 in words is "two trillion, fifty-four billion, one hundred fifty-five million, eight hundred twenty-one thousand, five hundred forty-four".