68954786838 has 64 divisors (see below), whose sum is σ = 175354122240. Its totient is φ = 19675396800.

The previous prime is 68954786777. The next prime is 68954786839. The reversal of 68954786838 is 83868745986.

68954786838 is a `hidden beast` number, since 6 + 8 + 95 + 478 + 68 + 3 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68954786839) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 167803 + ... + 407513.

It is an arithmetic number, because the mean of its divisors is an integer number (2739908160).

Almost surely, 2^68954786838 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68954786838, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87677061120).

68954786838 is an abundant number, since it is smaller than the sum of its proper divisors (106399335402).

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

68954786838 is a wasteful number, since it uses less digits than its factorization.

68954786838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240490 (or 240484 counting only the distinct ones).

The product of its digits is 557383680, while the sum is 72.

The spelling of 68954786838 in words is "sixty-eight billion, nine hundred fifty-four million, seven hundred eighty-six thousand, eight hundred thirty-eight".