7747966491272 has 48 divisors (see below), whose sum is σ = 17048814751260. Its totient is φ = 3291171588096.

The previous prime is 7747966491257. The next prime is 7747966491281. The reversal of 7747966491272 is 2721946697477.

It can be written as a sum of positive squares in 2 ways, for example, as 7303149524356 + 444816966916 = 2702434^2 + 666946^2 .

It is a junction number, because it is equal to n+sod(n) for n = 7747966491196 and 7747966491205.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 87412433 + ... + 87501024.

Almost surely, 2^{7747966491272} is an apocalyptic number.

It is an amenable number.

7747966491272 is an abundant number, since it is smaller than the sum of its proper divisors (9300848259988).

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

7747966491272 is a wasteful number, since it uses less digits than its factorization.

7747966491272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174913590 (or 174913579 counting only the distinct ones).

The product of its digits is 448084224, while the sum is 71.

The spelling of 7747966491272 in words is "seven trillion, seven hundred forty-seven billion, nine hundred sixty-six million, four hundred ninety-one thousand, two hundred seventy-two".