268439739460 has 192 divisors, whose sum is σ = 643139481600. Its totient is φ = 93566043648.

The previous prime is 268439739409. The next prime is 268439739499. The reversal of 268439739460 is 64937934862.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 66657967 + ... + 66661993.

It is an arithmetic number, because the mean of its divisors is an integer number (3349684800).

Almost surely, 2^268439739460 is an apocalyptic number.

268439739460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 268439739460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (321569740800).

268439739460 is an abundant number, since it is smaller than the sum of its proper divisors (374699742140).

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

268439739460 is a wasteful number, since it uses less digits than its factorization.

268439739460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4370 (or 4368 counting only the distinct ones).

The product of its (nonzero) digits is 47029248, while the sum is 61.

The spelling of 268439739460 in words is "two hundred sixty-eight billion, four hundred thirty-nine million, seven hundred thirty-nine thousand, four hundred sixty".