671118942495 has 128 divisors (see below), whose sum is σ = 1197301432320. Its totient is φ = 319593600000.

The previous prime is 671118942479. The next prime is 671118942499. The reversal of 671118942495 is 594249811176.

It is not a de Polignac number, because 671118942495 - 2⁴ = 671118942479 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671118942499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 272037252 + ... + 272039718.

It is an arithmetic number, because the mean of its divisors is an integer number (9353917440).

Almost surely, 2^671118942495 is an apocalyptic number.

671118942495 is a deficient number, since it is larger than the sum of its proper divisors (526182489825).

671118942495 is a wasteful number, since it uses less digits than its factorization.

671118942495 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3317.

The product of its digits is 4354560, while the sum is 57.

The spelling of 671118942495 in words is "six hundred seventy-one billion, one hundred eighteen million, nine hundred forty-two thousand, four hundred ninety-five".