67420818544228 has 12 divisors (see below), whose sum is σ = 117986504671420. Its totient is φ = 33710388638112.

The previous prime is 67420818544159. The next prime is 67420818544229. The reversal of 67420818544228 is 82244581802476.

It can be written as a sum of positive squares in 2 ways, for example, as 1124876602404 + 66295941941824 = 1060602^2 + 8142232^2 .

It is a hoax number, since the sum of its digits (61) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (67420818544229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3999958 + ... + 12281746.

Almost surely, 2^{67420818544228} is an apocalyptic number.

It is an amenable number.

67420818544228 is a deficient number, since it is larger than the sum of its proper divisors (50565686127192).

67420818544228 is a wasteful number, since it uses less digits than its factorization.

67420818544228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10317006 (or 10317004 counting only the distinct ones).

The product of its (nonzero) digits is 55050240, while the sum is 61.

The spelling of 67420818544228 in words is "sixty-seven trillion, four hundred twenty billion, eight hundred eighteen million, five hundred forty-four thousand, two hundred twenty-eight".