68511370220 has 12 divisors (see below), whose sum is σ = 143873877504. Its totient is φ = 27404548080.

The previous prime is 68511370219. The next prime is 68511370327. The reversal of 68511370220 is 2207311586.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1712784236 + ... + 1712784275.

It is an arithmetic number, because the mean of its divisors is an integer number (11989489792).

Almost surely, 2^68511370220 is an apocalyptic number.

It is an amenable number.

68511370220 is an abundant number, since it is smaller than the sum of its proper divisors (75362507284).

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

68511370220 is a wasteful number, since it uses less digits than its factorization.

68511370220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3425568520 (or 3425568518 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 35.

The spelling of 68511370220 in words is "sixty-eight billion, five hundred eleven million, three hundred seventy thousand, two hundred twenty".