67397924544 has 56 divisors (see below), whose sum is σ = 179308981488. Its totient is φ = 22341841920.

The previous prime is 67397924543. The next prime is 67397924609. The reversal of 67397924544 is 44542979376.

It is not an unprimeable number, because it can be changed into a prime (67397924543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 934947 + ... + 1004450.

It is an arithmetic number, because the mean of its divisors is an integer number (3201946098).

Almost surely, 2^67397924544 is an apocalyptic number.

67397924544 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

67397924544 is an abundant number, since it is smaller than the sum of its proper divisors (111911056944).

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

67397924544 is a wasteful number, since it uses less digits than its factorization.

67397924544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1939593 (or 1939583 counting only the distinct ones).

The product of its digits is 45722880, while the sum is 60.

The spelling of 67397924544 in words is "sixty-seven billion, three hundred ninety-seven million, nine hundred twenty-four thousand, five hundred forty-four".