67920306465 has 128 divisors (see below), whose sum is σ = 128999485440. Its totient is φ = 30147379200.

The previous prime is 67920306451. The next prime is 67920306491. The reversal of 67920306465 is 56460302976.

It is not a de Polignac number, because 67920306465 - 2⁶ = 67920306401 is a prime.

It is a super-2 number, since 2×67920306465² (a number of 22 digits) contains 22 as substring.

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 127 ways as a sum of consecutive naturals, for example, 16050900 + ... + 16055130.

It is an arithmetic number, because the mean of its divisors is an integer number (1007808480).

Almost surely, 2^67920306465 is an apocalyptic number.

It is an amenable number.

67920306465 is a deficient number, since it is larger than the sum of its proper divisors (61079178975).

67920306465 is a wasteful number, since it uses less digits than its factorization.

67920306465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4423.

The product of its (nonzero) digits is 1632960, while the sum is 48.

The spelling of 67920306465 in words is "sixty-seven billion, nine hundred twenty million, three hundred six thousand, four hundred sixty-five".