672513810545 has 16 divisors (see below), whose sum is σ = 813522597888. Its totient is φ = 533675278080.

The previous prime is 672513810541. The next prime is 672513810601. The reversal of 672513810545 is 545018315276.

It is not a de Polignac number, because 672513810545 - 2² = 672513810541 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 672513810545.

It is not an unprimeable number, because it can be changed into a prime (672513810541) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3409922 + ... + 3601748.

It is an arithmetic number, because the mean of its divisors is an integer number (50845162368).

Almost surely, 2^672513810545 is an apocalyptic number.

It is an amenable number.

672513810545 is a deficient number, since it is larger than the sum of its proper divisors (141008787343).

672513810545 is a wasteful number, since it uses less digits than its factorization.

672513810545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197480.

The product of its (nonzero) digits is 1008000, while the sum is 47.

The spelling of 672513810545 in words is "six hundred seventy-two billion, five hundred thirteen million, eight hundred ten thousand, five hundred forty-five".