68261774140 has 24 divisors (see below), whose sum is σ = 163828258272. Its totient is φ = 23404036800.

The previous prime is 68261774137. The next prime is 68261774153. The reversal of 68261774140 is 4147716286.

68261774140 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 243791911 + ... + 243792190.

It is an arithmetic number, because the mean of its divisors is an integer number (6826177428).

Almost surely, 2^68261774140 is an apocalyptic number.

It is an amenable number.

68261774140 is an abundant number, since it is smaller than the sum of its proper divisors (95566484132).

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

68261774140 is a wasteful number, since it uses less digits than its factorization.

68261774140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 487584117 (or 487584115 counting only the distinct ones).

The product of its (nonzero) digits is 451584, while the sum is 46.

The spelling of 68261774140 in words is "sixty-eight billion, two hundred sixty-one million, seven hundred seventy-four thousand, one hundred forty".