67157949880 has 128 divisors (see below), whose sum is σ = 188749025280. Its totient is φ = 20972021760.

The previous prime is 67157949839. The next prime is 67157949913. The reversal of 67157949880 is 8894975176.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 80002 + ... + 375121.

It is an arithmetic number, because the mean of its divisors is an integer number (1474601760).

Almost surely, 2^67157949880 is an apocalyptic number.

It is an amenable number.

67157949880 is an abundant number, since it is smaller than the sum of its proper divisors (121591075400).

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

67157949880 is a wasteful number, since it uses less digits than its factorization.

67157949880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 455189 (or 455185 counting only the distinct ones).

The product of its (nonzero) digits is 30481920, while the sum is 64.

The spelling of 67157949880 in words is "sixty-seven billion, one hundred fifty-seven million, nine hundred forty-nine thousand, eight hundred eighty".