10420120544489 has 2 divisors, whose sum is σ = 10420120544490. Its totient is φ = 10420120544488.

The previous prime is 10420120544467. The next prime is 10420120544621. The reversal of 10420120544489 is 98444502102401.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8078584021225 + 2341536523264 = 2842285^2 + 1530208^2 .

It is a cyclic number.

It is not a de Polignac number, because 10420120544489 - 2⁸ = 10420120544233 is a prime.

It is a super-2 number, since 2×10420120544489² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (10420120544089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5210060272244 + 5210060272245.

It is an arithmetic number, because the mean of its divisors is an integer number (5210060272245).

Almost surely, 2^{10420120544489} is an apocalyptic number.

It is an amenable number.

10420120544489 is a deficient number, since it is larger than the sum of its proper divisors (1).

10420120544489 is an equidigital number, since it uses as much as digits as its factorization.

10420120544489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 368640, while the sum is 44.

The spelling of 10420120544489 in words is "ten trillion, four hundred twenty billion, one hundred twenty million, five hundred forty-four thousand, four hundred eighty-nine".