207445372646540 has 96 divisors (see below), whose sum is σ = 509624236154880. Its totient is φ = 69445942546176.

The previous prime is 207445372646503. The next prime is 207445372646557. The reversal of 207445372646540 is 45646273544702.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 207445372646540.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11346974 + ... + 23316186.

It is an arithmetic number, because the mean of its divisors is an integer number (5308585793280).

Almost surely, 2^{207445372646540} is an apocalyptic number.

207445372646540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 207445372646540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (254812118077440).

207445372646540 is an abundant number, since it is smaller than the sum of its proper divisors (302178863508340).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

207445372646540 is a wasteful number, since it uses less digits than its factorization.

207445372646540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11972151 (or 11972149 counting only the distinct ones).

The product of its (nonzero) digits is 135475200, while the sum is 59.

The spelling of 207445372646540 in words is "two hundred seven trillion, four hundred forty-five billion, three hundred seventy-two million, six hundred forty-six thousand, five hundred forty".