2643265503 has 48 divisors (see below), whose sum is σ = 4088448000. Its totient is φ = 1640793024.

The previous prime is 2643265489. The next prime is 2643265507. The reversal of 2643265503 is 3055623462.

2643265503 is a `hidden beast` number, since 2 + 64 + 32 + 65 + 503 = 666.

It is not a de Polignac number, because 2643265503 - 2⁴ = 2643265487 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2643265507) 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 47 ways as a sum of consecutive naturals, for example, 5254750 + ... + 5255252.

It is an arithmetic number, because the mean of its divisors is an integer number (85176000).

Almost surely, 2^2643265503 is an apocalyptic number.

2643265503 is a deficient number, since it is larger than the sum of its proper divisors (1445182497).

2643265503 is a wasteful number, since it uses less digits than its factorization.

2643265503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 996 (or 993 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 36.

The square root of 2643265503 is about 51412.6978770809. The cubic root of 2643265503 is about 1382.6542598902.

Adding to 2643265503 its reverse (3055623462), we get a palindrome (5698888965).

The spelling of 2643265503 in words is "two billion, six hundred forty-three million, two hundred sixty-five thousand, five hundred three".