87759128630077 has 4 divisors (see below), whose sum is σ = 90785305479420. Its totient is φ = 84732951780736.

The previous prime is 87759128630053. The next prime is 87759128630087. The reversal of 87759128630077 is 77003682195778.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 29620653860196 + 58138474769881 = 5442486^2 + 7624859^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87759128630077 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 87759128629988 and 87759128630015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87759128630087) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1513088424628 + ... + 1513088424685.

It is an arithmetic number, because the mean of its divisors is an integer number (22696326369855).

Almost surely, 2^{87759128630077} is an apocalyptic number.

It is an amenable number.

87759128630077 is a deficient number, since it is larger than the sum of its proper divisors (3026176849343).

87759128630077 is a wasteful number, since it uses less digits than its factorization.

87759128630077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3026176849342.

The product of its (nonzero) digits is 248935680, while the sum is 70.

The spelling of 87759128630077 in words is "eighty-seven trillion, seven hundred fifty-nine billion, one hundred twenty-eight million, six hundred thirty thousand, seventy-seven".