1087276400621 has 2 divisors, whose sum is σ = 1087276400622. Its totient is φ = 1087276400620.

The previous prime is 1087276400603. The next prime is 1087276400653. The reversal of 1087276400621 is 1260046727801.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 817422124996 + 269854275625 = 904114^2 + 519475^2 .

It is a cyclic number.

It is not a de Polignac number, because 1087276400621 - 2⁶ = 1087276400557 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1087276400921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 543638200310 + 543638200311.

It is an arithmetic number, because the mean of its divisors is an integer number (543638200311).

Almost surely, 2^{1087276400621} is an apocalyptic number.

It is an amenable number.

1087276400621 is a deficient number, since it is larger than the sum of its proper divisors (1).

1087276400621 is an equidigital number, since it uses as much as digits as its factorization.

1087276400621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 225792, while the sum is 44.

The spelling of 1087276400621 in words is "one trillion, eighty-seven billion, two hundred seventy-six million, four hundred thousand, six hundred twenty-one".