67840453443 has 32 divisors (see below), whose sum is σ = 105351669760. Its totient is φ = 38031327360.

The previous prime is 67840453361. The next prime is 67840453517. The reversal of 67840453443 is 34435404876.

It is a Cunningham number, because it is equal to 260462²-1.

It is not a de Polignac number, because 67840453443 - 2⁹ = 67840452931 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 67840453392 and 67840453401.

It is not an unprimeable number, because it can be changed into a prime (67840453843) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 130233 + ... + 390693.

It is an arithmetic number, because the mean of its divisors is an integer number (3292239680).

Almost surely, 2^67840453443 is an apocalyptic number.

67840453443 is a deficient number, since it is larger than the sum of its proper divisors (37511216317).

67840453443 is a wasteful number, since it uses less digits than its factorization.

67840453443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260707.

The product of its (nonzero) digits is 3870720, while the sum is 48.

The spelling of 67840453443 in words is "sixty-seven billion, eight hundred forty million, four hundred fifty-three thousand, four hundred forty-three".