268485050557 has 4 divisors (see below), whose sum is σ = 268617506976. Its totient is φ = 268352594140.

The previous prime is 268485050507. The next prime is 268485050567. The reversal of 268485050557 is 755050584862.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-268485050557 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 268485050498 and 268485050507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (268485050507) 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, 66225169 + ... + 66229222.

It is an arithmetic number, because the mean of its divisors is an integer number (67154376744).

Almost surely, 2^268485050557 is an apocalyptic number.

It is an amenable number.

268485050557 is a deficient number, since it is larger than the sum of its proper divisors (132456419).

268485050557 is a wasteful number, since it uses less digits than its factorization.

268485050557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132456418.

The product of its (nonzero) digits is 13440000, while the sum is 55.

The spelling of 268485050557 in words is "two hundred sixty-eight billion, four hundred eighty-five million, fifty thousand, five hundred fifty-seven".