87786677220385 has 32 divisors (see below), whose sum is σ = 123840491096448. Its totient is φ = 58895764331520.

The previous prime is 87786677220313. The next prime is 87786677220409. The reversal of 87786677220385 is 58302277668778.

It is not a de Polignac number, because 87786677220385 - 2³⁹ = 87236921406497 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 38419087 + ... + 40639876.

It is an arithmetic number, because the mean of its divisors is an integer number (3870015346764).

Almost surely, 2^{87786677220385} is an apocalyptic number.

It is an amenable number.

87786677220385 is a deficient number, since it is larger than the sum of its proper divisors (36053813876063).

87786677220385 is a wasteful number, since it uses less digits than its factorization.

87786677220385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79060545.

The product of its (nonzero) digits is 2655313920, while the sum is 76.

The spelling of 87786677220385 in words is "eighty-seven trillion, seven hundred eighty-six billion, six hundred seventy-seven million, two hundred twenty thousand, three hundred eighty-five".