7768906992 has 400 divisors, whose sum is σ = 28300664832. Its totient is φ = 1998743040.

The previous prime is 7768906973. The next prime is 7768906997. The reversal of 7768906992 is 2996098677.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7768906997) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 12673278 + ... + 12673890.

Almost surely, 2^7768906992 is an apocalyptic number.

7768906992 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7768906992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14150332416).

7768906992 is an abundant number, since it is smaller than the sum of its proper divisors (20531757840).

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

7768906992 is a wasteful number, since it uses less digits than its factorization.

7768906992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 778 (or 763 counting only the distinct ones).

The product of its (nonzero) digits is 20575296, while the sum is 63.

The square root of 7768906992 is about 88141.4033925033. The cubic root of 7768906992 is about 1980.5537844920.

The spelling of 7768906992 in words is "seven billion, seven hundred sixty-eight million, nine hundred six thousand, nine hundred ninety-two".