67066715220 has 72 divisors (see below), whose sum is σ = 196306523616. Its totient is φ = 17106864192.

The previous prime is 67066715207. The next prime is 67066715231. The reversal of 67066715220 is 2251766076.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1024762 + ... + 1088241.

Almost surely, 2^67066715220 is an apocalyptic number.

67066715220 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

67066715220 is an abundant number, since it is smaller than the sum of its proper divisors (129239808396).

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

67066715220 is a wasteful number, since it uses less digits than its factorization.

67066715220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2113061 (or 2113036 counting only the distinct ones).

The product of its (nonzero) digits is 211680, while the sum is 42.

The spelling of 67066715220 in words is "sixty-seven billion, sixty-six million, seven hundred fifteen thousand, two hundred twenty".