67541906820 has 24 divisors (see below), whose sum is σ = 189117339264. Its totient is φ = 18011175136.

The previous prime is 67541906813. The next prime is 67541906893. The reversal of 67541906820 is 2860914576.

It is a self number, because there is not a number n which added to its sum of digits gives 67541906820.

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, 562849164 + ... + 562849283.

It is an arithmetic number, because the mean of its divisors is an integer number (7879889136).

Almost surely, 2^67541906820 is an apocalyptic number.

67541906820 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

67541906820 is an abundant number, since it is smaller than the sum of its proper divisors (121575432444).

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

67541906820 is a wasteful number, since it uses less digits than its factorization.

67541906820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1125698459 (or 1125698457 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 48.

The spelling of 67541906820 in words is "sixty-seven billion, five hundred forty-one million, nine hundred six thousand, eight hundred twenty".