7797255387 has 8 divisors (see below), whose sum is σ = 10445613120. Its totient is φ = 5173533960.

The previous prime is 7797255373. The next prime is 7797255407. The reversal of 7797255387 is 7835527977.

It is a happy number.

7797255387 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 7797255387 - 2⁴ = 7797255371 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7797255387.

It is not an unprimeable number, because it can be changed into a prime (7797255187) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6158337 + ... + 6159602.

It is an arithmetic number, because the mean of its divisors is an integer number (1305701640).

Almost surely, 2^7797255387 is an apocalyptic number.

7797255387 is a deficient number, since it is larger than the sum of its proper divisors (2648357733).

7797255387 is a wasteful number, since it uses less digits than its factorization.

7797255387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12318153.

The product of its digits is 25930800, while the sum is 60.

The square root of 7797255387 is about 88302.0689848205. The cubic root of 7797255387 is about 1982.9598444576.

The spelling of 7797255387 in words is "seven billion, seven hundred ninety-seven million, two hundred fifty-five thousand, three hundred eighty-seven".