1087072400521 has 2 divisors, whose sum is σ = 1087072400522. Its totient is φ = 1087072400520.

The previous prime is 1087072400497. The next prime is 1087072400563. The reversal of 1087072400521 is 1250042707801.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 980575257600 + 106497142921 = 990240^2 + 326339^2 .

It is a cyclic number.

It is not a de Polignac number, because 1087072400521 - 2¹⁵ = 1087072367753 is a prime.

It is not a weakly prime, because it can be changed into another prime (1087072400581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 543536200260 + 543536200261.

It is an arithmetic number, because the mean of its divisors is an integer number (543536200261).

Almost surely, 2^{1087072400521} is an apocalyptic number.

It is an amenable number.

1087072400521 is a deficient number, since it is larger than the sum of its proper divisors (1).

1087072400521 is an equidigital number, since it uses as much as digits as its factorization.

1087072400521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31360, while the sum is 37.

The spelling of 1087072400521 in words is "one trillion, eighty-seven billion, seventy-two million, four hundred thousand, five hundred twenty-one".