87657767136257 has 8 divisors (see below), whose sum is σ = 89798596204416. Its totient is φ = 85521586992912.

The previous prime is 87657767136221. The next prime is 87657767136263. The reversal of 87657767136257 is 75263176775678.

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

It is a cyclic number.

It is not a de Polignac number, because 87657767136257 - 2⁸ = 87657767136001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87657767336257) 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, 1162193033 + ... + 1162268454.

It is an arithmetic number, because the mean of its divisors is an integer number (11224824525552).

Almost surely, 2^{87657767136257} is an apocalyptic number.

It is an amenable number.

87657767136257 is a deficient number, since it is larger than the sum of its proper divisors (2140829068159).

87657767136257 is a wasteful number, since it uses less digits than its factorization.

87657767136257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2324462407.

The product of its digits is 4356374400, while the sum is 77.

The spelling of 87657767136257 in words is "eighty-seven trillion, six hundred fifty-seven billion, seven hundred sixty-seven million, one hundred thirty-six thousand, two hundred fifty-seven".