263506427653 has 12 divisors (see below), whose sum is σ = 306562297440. Its totient is φ = 225837295992.

The previous prime is 263506427629. The next prime is 263506427693. The reversal of 263506427653 is 356724605362.

It is not a de Polignac number, because 263506427653 - 2⁹ = 263506427141 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a junction number, because it is equal to n+sod(n) for n = 263506427597 and 263506427606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (263506427603) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 145768 + ... + 740446.

It is an arithmetic number, because the mean of its divisors is an integer number (25546858120).

Almost surely, 2^263506427653 is an apocalyptic number.

It is an amenable number.

263506427653 is a deficient number, since it is larger than the sum of its proper divisors (43055869787).

263506427653 is an equidigital number, since it uses as much as digits as its factorization.

263506427653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 603736 (or 603729 counting only the distinct ones).

The product of its (nonzero) digits is 5443200, while the sum is 49.

The spelling of 263506427653 in words is "two hundred sixty-three billion, five hundred six million, four hundred twenty-seven thousand, six hundred fifty-three".