7557232077 has 12 divisors (see below), whose sum is σ = 10948397980. Its totient is φ = 5023202688.

The previous prime is 7557232057. The next prime is 7557232091. The reversal of 7557232077 is 7702327557.

It is a happy number.

7557232077 is a `hidden beast` number, since 7 + 5 + 572 + 3 + 2 + 0 + 77 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 3657104676 + 3900127401 = 60474^2 + 62451^2 .

It is not a de Polignac number, because 7557232077 - 2¹⁰ = 7557231053 is a prime.

It is a super-2 number, since 2×7557232077² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7557232057) 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 11 ways as a sum of consecutive naturals, for example, 1242802 + ... + 1248867.

Almost surely, 2^7557232077 is an apocalyptic number.

It is an amenable number.

7557232077 is a deficient number, since it is larger than the sum of its proper divisors (3391165903).

7557232077 is a wasteful number, since it uses less digits than its factorization.

7557232077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2492012 (or 2492009 counting only the distinct ones).

The product of its (nonzero) digits is 720300, while the sum is 45.

The square root of 7557232077 is about 86932.3419505077. The cubic root of 7557232077 is about 1962.4002314867.

The spelling of 7557232077 in words is "seven billion, five hundred fifty-seven million, two hundred thirty-two thousand, seventy-seven".