68813770146 has 16 divisors (see below), whose sum is σ = 150139135008. Its totient is φ = 20852657600.

The previous prime is 68813770079. The next prime is 68813770169. The reversal of 68813770146 is 64107731886.

It is a super-2 number, since 2×68813770146² (a number of 22 digits) contains 22 as substring.

It is a Curzon 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, 521316375 + ... + 521316506.

It is an arithmetic number, because the mean of its divisors is an integer number (9383695938).

Almost surely, 2^68813770146 is an apocalyptic number.

68813770146 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

68813770146 is an abundant number, since it is smaller than the sum of its proper divisors (81325364862).

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

68813770146 is a wasteful number, since it uses less digits than its factorization.

68813770146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1042632897.

The product of its (nonzero) digits is 1354752, while the sum is 51.

The spelling of 68813770146 in words is "sixty-eight billion, eight hundred thirteen million, seven hundred seventy thousand, one hundred forty-six".