68738924212 has 72 divisors (see below), whose sum is σ = 145134060288. Its totient is φ = 28373587200.

The previous prime is 68738924209. The next prime is 68738924213. The reversal of 68738924212 is 21242983786.

It is a self number, because there is not a number n which added to its sum of digits gives 68738924212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68738924213) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1255228 + ... + 1308844.

Almost surely, 2^68738924212 is an apocalyptic number.

68738924212 is a gapful number since it is divisible by the number (62) 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 68738924212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72567030144).

68738924212 is an abundant number, since it is smaller than the sum of its proper divisors (76395136076).

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

68738924212 is a wasteful number, since it uses less digits than its factorization.

68738924212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53877 (or 53868 counting only the distinct ones).

The product of its digits is 2322432, while the sum is 52.

The spelling of 68738924212 in words is "sixty-eight billion, seven hundred thirty-eight million, nine hundred twenty-four thousand, two hundred twelve".