7785311012 has 12 divisors (see below), whose sum is σ = 13751624880. Its totient is φ = 3856275336.

The previous prime is 7785310999. The next prime is 7785311021. The reversal of 7785311012 is 2101135877.

It is a happy number.

It is a super-2 number, since 2×7785311012² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9094562 + ... + 9095417.

It is an arithmetic number, because the mean of its divisors is an integer number (1145968740).

Almost surely, 2^7785311012 is an apocalyptic number.

It is an amenable number.

7785311012 is a deficient number, since it is larger than the sum of its proper divisors (5966313868).

7785311012 is a wasteful number, since it uses less digits than its factorization.

7785311012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18190090 (or 18190088 counting only the distinct ones).

The product of its (nonzero) digits is 11760, while the sum is 35.

The square root of 7785311012 is about 88234.4094557220. The cubic root of 7785311012 is about 1981.9467819830.

Adding to 7785311012 its reverse (2101135877), we get a palindrome (9886446889).

The spelling of 7785311012 in words is "seven billion, seven hundred eighty-five million, three hundred eleven thousand, twelve".