2646557043 has 16 divisors (see below), whose sum is σ = 3801208320. Its totient is φ = 1628211744.

The previous prime is 2646557033. The next prime is 2646557057. The reversal of 2646557043 is 3407556462.

It is not a de Polignac number, because 2646557043 - 2¹⁸ = 2646294899 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2646556986 and 2646557004.

It is not an unprimeable number, because it can be changed into a prime (2646557033) 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 15 ways as a sum of consecutive naturals, for example, 195430 + ... + 208532.

It is an arithmetic number, because the mean of its divisors is an integer number (237575520).

Almost surely, 2^2646557043 is an apocalyptic number.

2646557043 is a deficient number, since it is larger than the sum of its proper divisors (1154651277).

2646557043 is a wasteful number, since it uses less digits than its factorization.

2646557043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18298.

The product of its (nonzero) digits is 604800, while the sum is 42.

The square root of 2646557043 is about 51444.6988814202. The cubic root of 2646557043 is about 1383.2279409457.

The spelling of 2646557043 in words is "two billion, six hundred forty-six million, five hundred fifty-seven thousand, forty-three".