7775277157 has 16 divisors (see below), whose sum is σ = 8000182080. Its totient is φ = 7552524672.

The previous prime is 7775277089. The next prime is 7775277161. The reversal of 7775277157 is 7517725777.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7775277157 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7775277098 and 7775277107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7775277197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9610569 + ... + 9611377.

It is an arithmetic number, because the mean of its divisors is an integer number (500011380).

Almost surely, 2^7775277157 is an apocalyptic number.

It is an amenable number.

7775277157 is a deficient number, since it is larger than the sum of its proper divisors (224904923).

7775277157 is a wasteful number, since it uses less digits than its factorization.

7775277157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1812.

The product of its digits is 5882450, while the sum is 55.

The square root of 7775277157 is about 88177.5320418983. The cubic root of 7775277157 is about 1981.0949591887.

The spelling of 7775277157 in words is "seven billion, seven hundred seventy-five million, two hundred seventy-seven thousand, one hundred fifty-seven".