7751920797 has 24 divisors (see below), whose sum is σ = 11960824824. Its totient is φ = 4820895744.

The previous prime is 7751920783. The next prime is 7751920811. The reversal of 7751920797 is 7970291577.

It is an interprime number because it is at equal distance from previous prime (7751920783) and next prime (7751920811).

It can be written as a sum of positive squares in 4 ways, for example, as 100220121 + 7651700676 = 10011^2 + 87474^2 .

It is not a de Polignac number, because 7751920797 - 2⁷ = 7751920669 is a prime.

It is a super-4 number, since 4×7751920797⁴ (a number of 41 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7751920597) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 206898 + ... + 241475.

It is an arithmetic number, because the mean of its divisors is an integer number (498367701).

Almost surely, 2^7751920797 is an apocalyptic number.

It is an amenable number.

7751920797 is a deficient number, since it is larger than the sum of its proper divisors (4208904027).

7751920797 is a wasteful number, since it uses less digits than its factorization.

7751920797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 448509 (or 448506 counting only the distinct ones).

The product of its (nonzero) digits is 1944810, while the sum is 54.

The square root of 7751920797 is about 88044.9930262931. The cubic root of 7751920797 is about 1979.1092817940.

The spelling of 7751920797 in words is "seven billion, seven hundred fifty-one million, nine hundred twenty thousand, seven hundred ninety-seven".