207772303947481 has 81 divisors (see below), whose sum is σ = 263712419700093. Its totient is φ = 163146914985600.

The previous prime is 207772303947413. The next prime is 207772303947487. The reversal of 207772303947481 is 184749303277702.

The square root of 207772303947481 is 14414309.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 1490438097225 + 206281865850256 = 1220835^2 + 14362516^2 .

It is not a de Polignac number, because 207772303947481 - 2¹⁷ = 207772303816409 is a prime.

It is a super-2 number, since 2×207772303947481² (a number of 29 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (64) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (207772303947487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 198067019445 + ... + 198067020493.

Almost surely, 2^{207772303947481} is an apocalyptic number.

207772303947481 is the 14414309-th square number.

207772303947481 is the 7207155-th centered octagonal number.

It is an amenable number.

207772303947481 is a deficient number, since it is larger than the sum of its proper divisors (55940115752612).

207772303947481 is an frugal number, since it uses more digits than its factorization.

207772303947481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2440 (or 1220 counting only the distinct ones).

The product of its (nonzero) digits is 99574272, while the sum is 64.

The spelling of 207772303947481 in words is "two hundred seven trillion, seven hundred seventy-two billion, three hundred three million, nine hundred forty-seven thousand, four hundred eighty-one".