268628520474 has 32 divisors (see below), whose sum is σ = 597364986240. Its totient is φ = 89480932416.

The previous prime is 268628520449. The next prime is 268628520481. The reversal of 268628520474 is 474025826862.

268628520474 is a `hidden beast` number, since 2 + 6 + 8 + 628 + 5 + 2 + 0 + 4 + 7 + 4 = 666.

It is a super-2 number, since 2×268628520474² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 268628520474.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1640799 + ... + 1797074.

It is an arithmetic number, because the mean of its divisors is an integer number (18667655820).

Almost surely, 2^268628520474 is an apocalyptic number.

268628520474 is an abundant number, since it is smaller than the sum of its proper divisors (328736465766).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

268628520474 is a wasteful number, since it uses less digits than its factorization.

268628520474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3439331 (or 3439325 counting only the distinct ones).

The product of its (nonzero) digits is 10321920, while the sum is 54.

The spelling of 268628520474 in words is "two hundred sixty-eight billion, six hundred twenty-eight million, five hundred twenty thousand, four hundred seventy-four".