263247012012541 has 4 divisors (see below), whose sum is σ = 263247045219900. Its totient is φ = 263246978805184.

The previous prime is 263247012012533. The next prime is 263247012012557. The reversal of 263247012012541 is 145210210742362.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 52160837284516 + 211086174728025 = 7222246^2 + 14528805^2 .

It is a cyclic number.

It is not a de Polignac number, because 263247012012541 - 2³ = 263247012012533 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 263247012012494 and 263247012012503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (263247012012641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3012315 + ... + 23142343.

It is an arithmetic number, because the mean of its divisors is an integer number (65811761304975).

Almost surely, 2^{263247012012541} is an apocalyptic number.

It is an amenable number.

263247012012541 is a deficient number, since it is larger than the sum of its proper divisors (33207359).

263247012012541 is a wasteful number, since it uses less digits than its factorization.

263247012012541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33207358.

The product of its (nonzero) digits is 161280, while the sum is 40.

The spelling of 263247012012541 in words is "two hundred sixty-three trillion, two hundred forty-seven billion, twelve million, twelve thousand, five hundred forty-one".