7872226761 has 24 divisors (see below), whose sum is σ = 12217463904. Its totient is φ = 4495659840.

The previous prime is 7872226759. The next prime is 7872226783. The reversal of 7872226761 is 1676222787.

It is not a de Polignac number, because 7872226761 - 2¹ = 7872226759 is a prime.

It is a super-2 number, since 2×7872226761² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 7872226761.

It is not an unprimeable number, because it can be changed into a prime (7872226741) 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 23 ways as a sum of consecutive naturals, for example, 237741 + ... + 268821.

It is an arithmetic number, because the mean of its divisors is an integer number (509060996).

Almost surely, 2^7872226761 is an apocalyptic number.

It is an amenable number.

7872226761 is a deficient number, since it is larger than the sum of its proper divisors (4345237143).

7872226761 is a wasteful number, since it uses less digits than its factorization.

7872226761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32821 (or 32814 counting only the distinct ones).

The product of its digits is 790272, while the sum is 48.

The square root of 7872226761 is about 88725.5699389979. The cubic root of 7872226761 is about 1989.2950341657.

The spelling of 7872226761 in words is "seven billion, eight hundred seventy-two million, two hundred twenty-six thousand, seven hundred sixty-one".