7201651669 has 2 divisors, whose sum is σ = 7201651670. Its totient is φ = 7201651668.

The previous prime is 7201651609. The next prime is 7201651679. The reversal of 7201651669 is 9661561027.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6978597444 + 223054225 = 83538^2 + 14935^2 .

It is a cyclic number.

It is not a de Polignac number, because 7201651669 - 2²³ = 7193263061 is a prime.

It is a super-2 number, since 2×7201651669² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7201651609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3600825834 + 3600825835.

It is an arithmetic number, because the mean of its divisors is an integer number (3600825835).

Almost surely, 2^7201651669 is an apocalyptic number.

It is an amenable number.

7201651669 is a deficient number, since it is larger than the sum of its proper divisors (1).

7201651669 is an equidigital number, since it uses as much as digits as its factorization.

7201651669 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 136080, while the sum is 43.

The square root of 7201651669 is about 84862.5457372097. The cubic root of 7201651669 is about 1931.1264124486.

The spelling of 7201651669 in words is "seven billion, two hundred one million, six hundred fifty-one thousand, six hundred sixty-nine".