263742552161 has 8 divisors (see below), whose sum is σ = 293840832384. Its totient is φ = 234664552720.

The previous prime is 263742552131. The next prime is 263742552163. The reversal of 263742552161 is 161255247362.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-263742552161 is a prime.

It is not an unprimeable number, because it can be changed into a prime (263742552163) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 255069650 + ... + 255070683.

It is an arithmetic number, because the mean of its divisors is an integer number (36730104048).

Almost surely, 2^263742552161 is an apocalyptic number.

It is an amenable number.

263742552161 is a deficient number, since it is larger than the sum of its proper divisors (30098280223).

263742552161 is a wasteful number, since it uses less digits than its factorization.

263742552161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 510140391.

The product of its digits is 604800, while the sum is 44.

The spelling of 263742552161 in words is "two hundred sixty-three billion, seven hundred forty-two million, five hundred fifty-two thousand, one hundred sixty-one".