67438672455 has 32 divisors (see below), whose sum is σ = 134527016448. Its totient is φ = 28026460800.

The previous prime is 67438672423. The next prime is 67438672471. The reversal of 67438672455 is 55427683476.

It is a happy number.

It is not a de Polignac number, because 67438672455 - 2⁵ = 67438672423 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 67438672395 and 67438672404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 29193076 + ... + 29195385.

It is an arithmetic number, because the mean of its divisors is an integer number (4203969264).

Almost surely, 2^67438672455 is an apocalyptic number.

67438672455 is a deficient number, since it is larger than the sum of its proper divisors (67088343993).

67438672455 is a wasteful number, since it uses less digits than its factorization.

67438672455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58388487.

The product of its digits is 33868800, while the sum is 57.

The spelling of 67438672455 in words is "sixty-seven billion, four hundred thirty-eight million, six hundred seventy-two thousand, four hundred fifty-five".