1556553156341 has 4 divisors (see below), whose sum is σ = 1648115106732. Its totient is φ = 1464991205952.

The previous prime is 1556553156317. The next prime is 1556553156461. The reversal of 1556553156341 is 1436513556551.

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 952946916100 + 603606240241 = 976190^2 + 776921^2 .

It is a cyclic number.

It is not a de Polignac number, because 1556553156341 - 2²⁶ = 1556486047477 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1556553156341.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1556553156541) 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, 45780975170 + ... + 45780975203.

It is an arithmetic number, because the mean of its divisors is an integer number (412028776683).

Almost surely, 2^{1556553156341} is an apocalyptic number.

It is an amenable number.

1556553156341 is a deficient number, since it is larger than the sum of its proper divisors (91561950391).

1556553156341 is an equidigital number, since it uses as much as digits as its factorization.

1556553156341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91561950390.

The product of its digits is 4050000, while the sum is 50.

The spelling of 1556553156341 in words is "one trillion, five hundred fifty-six billion, five hundred fifty-three million, one hundred fifty-six thousand, three hundred forty-one".