1612402504553 has 4 divisors (see below), whose sum is σ = 1655980950660. Its totient is φ = 1568824058448.

The previous prime is 1612402504511. The next prime is 1612402504571. The reversal of 1612402504553 is 3554052042161.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 731832342784 + 880570161769 = 855472^2 + 938387^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1612402504553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1612402534553) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21789222998 + ... + 21789223071.

It is an arithmetic number, because the mean of its divisors is an integer number (413995237665).

Almost surely, 2^{1612402504553} is an apocalyptic number.

It is an amenable number.

1612402504553 is a deficient number, since it is larger than the sum of its proper divisors (43578446107).

1612402504553 is an equidigital number, since it uses as much as digits as its factorization.

1612402504553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43578446106.

The product of its (nonzero) digits is 144000, while the sum is 38.

The spelling of 1612402504553 in words is "one trillion, six hundred twelve billion, four hundred two million, five hundred four thousand, five hundred fifty-three".