1553554545406 has 4 divisors (see below), whose sum is σ = 2330331818112. Its totient is φ = 776777272702.

The previous prime is 1553554545401. The next prime is 1553554545409. The reversal of 1553554545406 is 6045454553551.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1553554545401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 388388636350 + ... + 388388636353.

It is an arithmetic number, because the mean of its divisors is an integer number (582582954528).

Almost surely, 2^{1553554545406} is an apocalyptic number.

1553554545406 is a deficient number, since it is larger than the sum of its proper divisors (776777272706).

1553554545406 is an equidigital number, since it uses as much as digits as its factorization.

1553554545406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 776777272705.

The product of its (nonzero) digits is 18000000, while the sum is 52.

The spelling of 1553554545406 in words is "one trillion, five hundred fifty-three billion, five hundred fifty-four million, five hundred forty-five thousand, four hundred six".