207172199045 has 32 divisors (see below), whose sum is σ = 296683540992. Its totient is φ = 135788792832.

The previous prime is 207172199041. The next prime is 207172199071. The reversal of 207172199045 is 540991271702.

It is not a de Polignac number, because 207172199045 - 2² = 207172199041 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (207172199041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1063769 + ... + 1243361.

It is an arithmetic number, because the mean of its divisors is an integer number (9271360656).

Almost surely, 2^207172199045 is an apocalyptic number.

It is an amenable number.

207172199045 is a deficient number, since it is larger than the sum of its proper divisors (89511341947).

207172199045 is a wasteful number, since it uses less digits than its factorization.

207172199045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181061.

The product of its (nonzero) digits is 317520, while the sum is 47.

The spelling of 207172199045 in words is "two hundred seven billion, one hundred seventy-two million, one hundred ninety-nine thousand, forty-five".