2643333540505 has 32 divisors (see below), whose sum is σ = 3927651704064. Its totient is φ = 1666276448256.

The previous prime is 2643333540493. The next prime is 2643333540509. The reversal of 2643333540505 is 5050453333462.

It is not a de Polignac number, because 2643333540505 - 2³⁵ = 2608973802137 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2643333540509) 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, 51632292 + ... + 51683461.

It is an arithmetic number, because the mean of its divisors is an integer number (122739115752).

Almost surely, 2^{2643333540505} is an apocalyptic number.

It is an amenable number.

2643333540505 is a deficient number, since it is larger than the sum of its proper divisors (1284318163559).

2643333540505 is a wasteful number, since it uses less digits than its factorization.

2643333540505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103315825.

The product of its (nonzero) digits is 1944000, while the sum is 43.

Adding to 2643333540505 its reverse (5050453333462), we get a palindrome (7693786873967).

The spelling of 2643333540505 in words is "two trillion, six hundred forty-three billion, three hundred thirty-three million, five hundred forty thousand, five hundred five".