2156544503043 has 24 divisors (see below), whose sum is σ = 3350145542400. Its totient is φ = 1230358142160.

The previous prime is 2156544502999. The next prime is 2156544503101. The reversal of 2156544503043 is 3403054456512.

It is not a de Polignac number, because 2156544503043 - 2¹² = 2156544498947 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2156544502986 and 2156544503004.

It is not an unprimeable number, because it can be changed into a prime (2156544503143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11531943 + ... + 11717456.

It is an arithmetic number, because the mean of its divisors is an integer number (139589397600).

Almost surely, 2^{2156544503043} is an apocalyptic number.

2156544503043 is a deficient number, since it is larger than the sum of its proper divisors (1193601039357).

2156544503043 is a wasteful number, since it uses less digits than its factorization.

2156544503043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23250047 (or 23250040 counting only the distinct ones).

The product of its (nonzero) digits is 864000, while the sum is 42.

Adding to 2156544503043 its reverse (3403054456512), we get a palindrome (5559598959555).

The spelling of 2156544503043 in words is "two trillion, one hundred fifty-six billion, five hundred forty-four million, five hundred three thousand, forty-three".