10987890278401 has 2 divisors, whose sum is σ = 10987890278402. Its totient is φ = 10987890278400.

The previous prime is 10987890278381. The next prime is 10987890278501. The reversal of 10987890278401 is 10487209878901.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9770619388401 + 1217270890000 = 3125799^2 + 1103300^2 .

It is a cyclic number.

It is not a de Polignac number, because 10987890278401 - 2²⁹ = 10987353407489 is a prime.

It is not a weakly prime, because it can be changed into another prime (10987890278501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5493945139200 + 5493945139201.

It is an arithmetic number, because the mean of its divisors is an integer number (5493945139201).

Almost surely, 2^{10987890278401} is an apocalyptic number.

It is an amenable number.

10987890278401 is a deficient number, since it is larger than the sum of its proper divisors (1).

10987890278401 is an equidigital number, since it uses as much as digits as its factorization.

10987890278401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16257024, while the sum is 64.

The spelling of 10987890278401 in words is "ten trillion, nine hundred eighty-seven billion, eight hundred ninety million, two hundred seventy-eight thousand, four hundred one".