268521599494 has 8 divisors (see below), whose sum is σ = 402918805800. Its totient is φ = 134215330896.

The previous prime is 268521599477. The next prime is 268521599551. The reversal of 268521599494 is 494995125862.

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

It is a super-2 number, since 2×268521599494² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22727044 + ... + 22738855.

It is an arithmetic number, because the mean of its divisors is an integer number (50364850725).

Almost surely, 2^268521599494 is an apocalyptic number.

268521599494 is a deficient number, since it is larger than the sum of its proper divisors (134397206306).

268521599494 is a wasteful number, since it uses less digits than its factorization.

268521599494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45468854.

The product of its digits is 55987200, while the sum is 64.

The spelling of 268521599494 in words is "two hundred sixty-eight billion, five hundred twenty-one million, five hundred ninety-nine thousand, four hundred ninety-four".