7761605253 has 16 divisors (see below), whose sum is σ = 10792782336. Its totient is φ = 4955857920.

The previous prime is 7761605237. The next prime is 7761605281. The reversal of 7761605253 is 3525061677.

It is not a de Polignac number, because 7761605253 - 2⁴ = 7761605237 is a prime.

It is a super-2 number, since 2×7761605253² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7761605233) 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, 421176 + ... + 439217.

It is an arithmetic number, because the mean of its divisors is an integer number (674548896).

Almost surely, 2^7761605253 is an apocalyptic number.

It is an amenable number.

7761605253 is a deficient number, since it is larger than the sum of its proper divisors (3031177083).

7761605253 is a wasteful number, since it uses less digits than its factorization.

7761605253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 860524.

The product of its (nonzero) digits is 264600, while the sum is 42.

The square root of 7761605253 is about 88099.9730590197. The cubic root of 7761605253 is about 1979.9331043107.

The spelling of 7761605253 in words is "seven billion, seven hundred sixty-one million, six hundred five thousand, two hundred fifty-three".