1553320775409 has 16 divisors (see below), whose sum is σ = 2282279305152. Its totient is φ = 933659713728.

The previous prime is 1553320775387. The next prime is 1553320775417. The reversal of 1553320775409 is 9045770233551.

It is a happy number.

It is not a de Polignac number, because 1553320775409 - 2²⁸ = 1553052339953 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1553320735409) 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 in 15 ways as a sum of consecutive naturals, for example, 463123182 + ... + 463126535.

It is an arithmetic number, because the mean of its divisors is an integer number (142642456572).

Almost surely, 2^{1553320775409} is an apocalyptic number.

It is an amenable number.

1553320775409 is a deficient number, since it is larger than the sum of its proper divisors (728958529743).

1553320775409 is a wasteful number, since it uses less digits than its factorization.

1553320775409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 926249776.

The product of its (nonzero) digits is 3969000, while the sum is 51.

The spelling of 1553320775409 in words is "one trillion, five hundred fifty-three billion, three hundred twenty million, seven hundred seventy-five thousand, four hundred nine".