67949159520 has 384 divisors, whose sum is σ = 238264975872. Its totient is φ = 16139059200.

The previous prime is 67949159479. The next prime is 67949159591. The reversal of 67949159520 is 2595194976.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 85255762 + ... + 85256558.

It is an arithmetic number, because the mean of its divisors is an integer number (620481708).

Almost surely, 2^67949159520 is an apocalyptic number.

67949159520 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 67949159520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (119132487936).

67949159520 is an abundant number, since it is smaller than the sum of its proper divisors (170315816352).

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

67949159520 is a wasteful number, since it uses less digits than its factorization.

67949159520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1134 (or 1126 counting only the distinct ones).

The product of its (nonzero) digits is 6123600, while the sum is 57.

The spelling of 67949159520 in words is "sixty-seven billion, nine hundred forty-nine million, one hundred fifty-nine thousand, five hundred twenty".