1538810101553 has 2 divisors, whose sum is σ = 1538810101554. Its totient is φ = 1538810101552.

The previous prime is 1538810101541. The next prime is 1538810101589. The reversal of 1538810101553 is 3551010188351.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1204567710784 + 334242390769 = 1097528^2 + 578137^2 .

It is a cyclic number.

It is not a de Polignac number, because 1538810101553 - 2¹⁶ = 1538810036017 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1538810101553.

It is not a weakly prime, because it can be changed into another prime (1538810101753) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 769405050776 + 769405050777.

It is an arithmetic number, because the mean of its divisors is an integer number (769405050777).

Almost surely, 2^{1538810101553} is an apocalyptic number.

It is an amenable number.

1538810101553 is a deficient number, since it is larger than the sum of its proper divisors (1).

1538810101553 is an equidigital number, since it uses as much as digits as its factorization.

1538810101553 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72000, while the sum is 41.

The spelling of 1538810101553 in words is "one trillion, five hundred thirty-eight billion, eight hundred ten million, one hundred one thousand, five hundred fifty-three".