7778695260 has 192 divisors, whose sum is σ = 25328443392. Its totient is φ = 1747048704.

The previous prime is 7778695231. The next prime is 7778695261. The reversal of 7778695260 is 625968777.

It is a self number, because there is not a number n which added to its sum of digits gives 7778695260.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7778695261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 7912729 + ... + 7913711.

It is an arithmetic number, because the mean of its divisors is an integer number (131918976).

Almost surely, 2^7778695260 is an apocalyptic number.

7778695260 is a gapful number since it is divisible by the number (70) 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 7778695260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12664221696).

7778695260 is an abundant number, since it is smaller than the sum of its proper divisors (17549748132).

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

7778695260 is a wasteful number, since it uses less digits than its factorization.

7778695260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1312 (or 1310 counting only the distinct ones).

The product of its (nonzero) digits is 8890560, while the sum is 57.

The square root of 7778695260 is about 88196.9118506992. The cubic root of 7778695260 is about 1981.3852208492.

The spelling of 7778695260 in words is "seven billion, seven hundred seventy-eight million, six hundred ninety-five thousand, two hundred sixty".