67901919820 has 48 divisors (see below), whose sum is σ = 164546823168. Its totient is φ = 23054627520.

The previous prime is 67901919817. The next prime is 67901919857. The reversal of 67901919820 is 2891910976.

67901919820 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×67901919820² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2340016 + ... + 2368855.

It is an arithmetic number, because the mean of its divisors is an integer number (3428058816).

Almost surely, 2^67901919820 is an apocalyptic number.

It is an amenable number.

67901919820 is an abundant number, since it is smaller than the sum of its proper divisors (96644903348).

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

67901919820 is a wasteful number, since it uses less digits than its factorization.

67901919820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4708990 (or 4708988 counting only the distinct ones).

The product of its (nonzero) digits is 489888, while the sum is 52.

The spelling of 67901919820 in words is "sixty-seven billion, nine hundred one million, nine hundred nineteen thousand, eight hundred twenty".