68905395630 has 256 divisors, whose sum is σ = 201483417600. Its totient is φ = 16695383040.

The previous prime is 68905395583. The next prime is 68905395631. The reversal of 68905395630 is 3659350986.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68905395631) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 13473954 + ... + 13479066.

It is an arithmetic number, because the mean of its divisors is an integer number (787044600).

Almost surely, 2^68905395630 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68905395630, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (100741708800).

68905395630 is an abundant number, since it is smaller than the sum of its proper divisors (132578021970).

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

68905395630 is a wasteful number, since it uses less digits than its factorization.

68905395630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5256 (or 5250 counting only the distinct ones).

The product of its (nonzero) digits is 5248800, while the sum is 54.

The spelling of 68905395630 in words is "sixty-eight billion, nine hundred five million, three hundred ninety-five thousand, six hundred thirty".