1087445506521 has 32 divisors (see below), whose sum is σ = 1592431672320. Its totient is φ = 654603768000.

The previous prime is 1087445506487. The next prime is 1087445506541. The reversal of 1087445506521 is 1256055447801.

It is a happy number.

It is not a de Polignac number, because 1087445506521 - 2⁶ = 1087445506457 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1087445506541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 64038010 + ... + 64054988.

It is an arithmetic number, because the mean of its divisors is an integer number (49763489760).

Almost surely, 2^{1087445506521} is an apocalyptic number.

1087445506521 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1087445506521 is a deficient number, since it is larger than the sum of its proper divisors (504986165799).

1087445506521 is a wasteful number, since it uses less digits than its factorization.

1087445506521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29997.

The product of its (nonzero) digits is 1344000, while the sum is 48.

The spelling of 1087445506521 in words is "one trillion, eighty-seven billion, four hundred forty-five million, five hundred six thousand, five hundred twenty-one".