87767365005 has 24 divisors (see below), whose sum is σ = 152170756920. Its totient is φ = 46796751360.

The previous prime is 87767365003. The next prime is 87767365031. The reversal of 87767365005 is 50056376778.

87767365005 is a `hidden beast` number, since 8 + 77 + 67 + 3 + 6 + 500 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 28971784521 + 58795580484 = 170211^2 + 242478^2 .

It is not a de Polignac number, because 87767365005 - 2¹ = 87767365003 is a prime.

It is a super-2 number, since 2×87767365005² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87767365003) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 89136 + ... + 428345.

It is an arithmetic number, because the mean of its divisors is an integer number (6340448205).

Almost surely, 2^87767365005 is an apocalyptic number.

It is an amenable number.

87767365005 is a deficient number, since it is larger than the sum of its proper divisors (64403391915).

87767365005 is a wasteful number, since it uses less digits than its factorization.

87767365005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 521261 (or 521258 counting only the distinct ones).

The product of its (nonzero) digits is 7408800, while the sum is 54.

The spelling of 87767365005 in words is "eighty-seven billion, seven hundred sixty-seven million, three hundred sixty-five thousand, five".