67220431692 has 24 divisors (see below), whose sum is σ = 157976078400. Its totient is φ = 22245609936.

The previous prime is 67220431639. The next prime is 67220431693. The reversal of 67220431692 is 29613402276.

It is not an unprimeable number, because it can be changed into a prime (67220431693) 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, 20148342 + ... + 20151677.

It is an arithmetic number, because the mean of its divisors is an integer number (6582336600).

Almost surely, 2^67220431692 is an apocalyptic number.

It is an amenable number.

67220431692 is an abundant number, since it is smaller than the sum of its proper divisors (90755646708).

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

67220431692 is a wasteful number, since it uses less digits than its factorization.

67220431692 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40300165 (or 40300163 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 42.

The spelling of 67220431692 in words is "sixty-seven billion, two hundred twenty million, four hundred thirty-one thousand, six hundred ninety-two".