68390634000 has 320 divisors, whose sum is σ = 240725092608. Its totient is φ = 16602624000.

The previous prime is 68390633989. The next prime is 68390634017. The reversal of 68390634000 is 43609386.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a nialpdrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 68390634000.

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, 5687995 + ... + 5700005.

Almost surely, 2^68390634000 is an apocalyptic number.

68390634000 is a gapful number since it is divisible by the number (60) 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 68390634000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (120362546304).

68390634000 is an abundant number, since it is smaller than the sum of its proper divisors (172334458608).

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

68390634000 is a wasteful number, since it uses less digits than its factorization.

68390634000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12123 (or 12107 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 39.

The spelling of 68390634000 in words is "sixty-eight billion, three hundred ninety million, six hundred thirty-four thousand".