7563440263 has 4 divisors (see below), whose sum is σ = 7564763448. Its totient is φ = 7562117080.

The previous prime is 7563440251. The next prime is 7563440279. The reversal of 7563440263 is 3620443657.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7563440263 is a prime.

It is a super-2 number, since 2×7563440263² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7563440293) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 652981 + ... + 664462.

It is an arithmetic number, because the mean of its divisors is an integer number (1891190862).

Almost surely, 2^7563440263 is an apocalyptic number.

7563440263 is a deficient number, since it is larger than the sum of its proper divisors (1323185).

7563440263 is a wasteful number, since it uses less digits than its factorization.

7563440263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1323184.

The product of its (nonzero) digits is 362880, while the sum is 40.

The square root of 7563440263 is about 86968.0416187464. The cubic root of 7563440263 is about 1962.9374480667.

The spelling of 7563440263 in words is "seven billion, five hundred sixty-three million, four hundred forty thousand, two hundred sixty-three".