1087287578749 has 4 divisors (see below), whose sum is σ = 1116673729564. Its totient is φ = 1057901427936.

The previous prime is 1087287578693. The next prime is 1087287578759. The reversal of 1087287578749 is 9478757827801.

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 891730819225 + 195556759524 = 944315^2 + 442218^2 .

It is a cyclic number.

It is not a de Polignac number, because 1087287578749 - 2¹³ = 1087287570557 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1087287578759) 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, 14693075352 + ... + 14693075425.

It is an arithmetic number, because the mean of its divisors is an integer number (279168432391).

Almost surely, 2^{1087287578749} is an apocalyptic number.

It is an amenable number.

1087287578749 is a deficient number, since it is larger than the sum of its proper divisors (29386150815).

1087287578749 is an equidigital number, since it uses as much as digits as its factorization.

1087287578749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29386150814.

The product of its (nonzero) digits is 442552320, while the sum is 73.

The spelling of 1087287578749 in words is "one trillion, eighty-seven billion, two hundred eighty-seven million, five hundred seventy-eight thousand, seven hundred forty-nine".