7785315797 has 16 divisors (see below), whose sum is σ = 9369360000. Its totient is φ = 6319503360.

The previous prime is 7785315787. The next prime is 7785315829. The reversal of 7785315797 is 7975135877.

It is not a de Polignac number, because 7785315797 - 2¹⁶ = 7785250261 is a prime.

It is a super-2 number, since 2×7785315797² (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 (7785315737) 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 15 ways as a sum of consecutive naturals, for example, 394829 + ... + 414077.

It is an arithmetic number, because the mean of its divisors is an integer number (585585000).

Almost surely, 2^7785315797 is an apocalyptic number.

It is an amenable number.

7785315797 is a deficient number, since it is larger than the sum of its proper divisors (1584044203).

7785315797 is a wasteful number, since it uses less digits than its factorization.

7785315797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22316.

The product of its digits is 12965400, while the sum is 59.

The square root of 7785315797 is about 88234.4365709897. The cubic root of 7785315797 is about 1981.9471880303.

The spelling of 7785315797 in words is "seven billion, seven hundred eighty-five million, three hundred fifteen thousand, seven hundred ninety-seven".