42506155403263 has 4 divisors (see below), whose sum is σ = 43654970414200. Its totient is φ = 41357340392328.

The previous prime is 42506155403161. The next prime is 42506155403273. The reversal of 42506155403263 is 36230455160524.

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-42506155403263 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42506155403273) 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, 574407505413 + ... + 574407505486.

It is an arithmetic number, because the mean of its divisors is an integer number (10913742603550).

Almost surely, 2^{42506155403263} is an apocalyptic number.

42506155403263 is a deficient number, since it is larger than the sum of its proper divisors (1148815010937).

42506155403263 is a wasteful number, since it uses less digits than its factorization.

42506155403263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1148815010936.

The product of its (nonzero) digits is 2592000, while the sum is 46.

The spelling of 42506155403263 in words is "forty-two trillion, five hundred six billion, one hundred fifty-five million, four hundred three thousand, two hundred sixty-three".