671440325595 has 32 divisors (see below), whose sum is σ = 1217835091200. Its totient is φ = 313157591424.

The previous prime is 671440325593. The next prime is 671440325629. The reversal of 671440325595 is 595523044176.

It is not a de Polignac number, because 671440325595 - 2¹ = 671440325593 is a prime.

It is a super-2 number, since 2×671440325595² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (671440325593) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 90609025 + ... + 90616434.

It is an arithmetic number, because the mean of its divisors is an integer number (38057346600).

Almost surely, 2^671440325595 is an apocalyptic number.

671440325595 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

671440325595 is a deficient number, since it is larger than the sum of its proper divisors (546394765605).

671440325595 is a wasteful number, since it uses less digits than its factorization.

671440325595 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181225499.

The product of its (nonzero) digits is 4536000, while the sum is 51.

The spelling of 671440325595 in words is "six hundred seventy-one billion, four hundred forty million, three hundred twenty-five thousand, five hundred ninety-five".