7768129475 has 12 divisors (see below), whose sum is σ = 9702794904. Its totient is φ = 6169139520.

The previous prime is 7768129471. The next prime is 7768129489. The reversal of 7768129475 is 5749218677.

It is not a de Polignac number, because 7768129475 - 2² = 7768129471 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7768129475.

It is not an unprimeable number, because it can be changed into a prime (7768129471) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1130609 + ... + 1137458.

It is an arithmetic number, because the mean of its divisors is an integer number (808566242).

Almost surely, 2^7768129475 is an apocalyptic number.

7768129475 is a deficient number, since it is larger than the sum of its proper divisors (1934665429).

7768129475 is a wasteful number, since it uses less digits than its factorization.

7768129475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2268214 (or 2268209 counting only the distinct ones).

The product of its digits is 5927040, while the sum is 56.

The square root of 7768129475 is about 88136.9926591553. The cubic root of 7768129475 is about 1980.4877106066.

The spelling of 7768129475 in words is "seven billion, seven hundred sixty-eight million, one hundred twenty-nine thousand, four hundred seventy-five".