671081226465 has 64 divisors (see below), whose sum is σ = 1190402825472. Its totient is φ = 320684313600.

The previous prime is 671081226461. The next prime is 671081226523. The reversal of 671081226465 is 564622180176.

It is not a de Polignac number, because 671081226465 - 2² = 671081226461 is a prime.

It is not an unprimeable number, because it can be changed into a prime (671081226461) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2927050 + ... + 3147980.

It is an arithmetic number, because the mean of its divisors is an integer number (18600044148).

Almost surely, 2^671081226465 is an apocalyptic number.

671081226465 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

671081226465 is a deficient number, since it is larger than the sum of its proper divisors (519321599007).

671081226465 is a wasteful number, since it uses less digits than its factorization.

671081226465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221410.

The product of its (nonzero) digits is 967680, while the sum is 48.

The spelling of 671081226465 in words is "six hundred seventy-one billion, eighty-one million, two hundred twenty-six thousand, four hundred sixty-five".