68202020545 has 8 divisors (see below), whose sum is σ = 81939977280. Its totient is φ = 54496581360.

The previous prime is 68202020531. The next prime is 68202020563. The reversal of 68202020545 is 54502020286.

68202020545 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 68202020545 - 2¹³ = 68202012353 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 68202020545.

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, 8124771 + ... + 8133160.

It is an arithmetic number, because the mean of its divisors is an integer number (10242497160).

Almost surely, 2^68202020545 is an apocalyptic number.

It is an amenable number.

68202020545 is a deficient number, since it is larger than the sum of its proper divisors (13737956735).

68202020545 is a wasteful number, since it uses less digits than its factorization.

68202020545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16258775.

The product of its (nonzero) digits is 38400, while the sum is 34.

The spelling of 68202020545 in words is "sixty-eight billion, two hundred two million, twenty thousand, five hundred forty-five".