1202350661553 has 4 divisors (see below), whose sum is σ = 1603134215408. Its totient is φ = 801567107700.

The previous prime is 1202350661527. The next prime is 1202350661591. The reversal of 1202350661553 is 3551660532021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1202350661553 - 2¹⁰ = 1202350660529 is a prime.

It is a super-2 number, since 2×1202350661553² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1202350661593) 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, 200391776923 + ... + 200391776928.

It is an arithmetic number, because the mean of its divisors is an integer number (400783553852).

Almost surely, 2^{1202350661553} is an apocalyptic number.

It is an amenable number.

1202350661553 is a deficient number, since it is larger than the sum of its proper divisors (400783553855).

1202350661553 is an equidigital number, since it uses as much as digits as its factorization.

1202350661553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400783553854.

The product of its (nonzero) digits is 162000, while the sum is 39.

The spelling of 1202350661553 in words is "one trillion, two hundred two billion, three hundred fifty million, six hundred sixty-one thousand, five hundred fifty-three".