2155654450443 has 32 divisors (see below), whose sum is σ = 3230108582400. Its totient is φ = 1268789195520.

The previous prime is 2155654450403. The next prime is 2155654450513. The reversal of 2155654450443 is 3440544565512.

It is not a de Polignac number, because 2155654450443 - 2²¹ = 2155652353291 is a prime.

It is a super-2 number, since 2×2155654450443² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2155654450392 and 2155654450401.

It is not an unprimeable number, because it can be changed into a prime (2155654450403) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13644663 + ... + 13801743.

It is an arithmetic number, because the mean of its divisors is an integer number (100940893200).

Almost surely, 2^{2155654450443} is an apocalyptic number.

2155654450443 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

2155654450443 is a deficient number, since it is larger than the sum of its proper divisors (1074454131957).

2155654450443 is a wasteful number, since it uses less digits than its factorization.

2155654450443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172419.

The product of its (nonzero) digits is 5760000, while the sum is 48.

The spelling of 2155654450443 in words is "two trillion, one hundred fifty-five billion, six hundred fifty-four million, four hundred fifty thousand, four hundred forty-three".