268478929554 has 64 divisors (see below), whose sum is σ = 600697866240. Its totient is φ = 79310000000.

The previous prime is 268478929531. The next prime is 268478929559. The reversal of 268478929554 is 455929874862.

268478929554 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×268478929554² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (268478929559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 95179 + ... + 738929.

It is an arithmetic number, because the mean of its divisors is an integer number (9385904160).

Almost surely, 2^268478929554 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 268478929554, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (300348933120).

268478929554 is an abundant number, since it is smaller than the sum of its proper divisors (332218936686).

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

268478929554 is a wasteful number, since it uses less digits than its factorization.

268478929554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 643927.

The product of its digits is 348364800, while the sum is 69.

The spelling of 268478929554 in words is "two hundred sixty-eight billion, four hundred seventy-eight million, nine hundred twenty-nine thousand, five hundred fifty-four".