1087656137305 has 12 divisors (see below), whose sum is σ = 1351745777772. Its totient is φ = 840120599360.

The previous prime is 1087656137299. The next prime is 1087656137383. The reversal of 1087656137305 is 5037316567801.

It can be written as a sum of positive squares in 6 ways, for example, as 141746226064 + 945909911241 = 376492^2 + 972579^2 .

It is not a de Polignac number, because 1087656137305 - 2¹⁵ = 1087656104537 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 129324706 + ... + 129333115.

It is an arithmetic number, because the mean of its divisors is an integer number (112645481481).

Almost surely, 2^{1087656137305} is an apocalyptic number.

It is an amenable number.

1087656137305 is a deficient number, since it is larger than the sum of its proper divisors (264089640467).

1087656137305 is an equidigital number, since it uses as much as digits as its factorization.

1087656137305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258657884 (or 258657855 counting only the distinct ones).

The product of its (nonzero) digits is 3175200, while the sum is 52.

The spelling of 1087656137305 in words is "one trillion, eighty-seven billion, six hundred fifty-six million, one hundred thirty-seven thousand, three hundred five".