1554436243043 has 4 divisors (see below), whose sum is σ = 1564868701200. Its totient is φ = 1544003784888.

The previous prime is 1554436242949. The next prime is 1554436243051. The reversal of 1554436243043 is 3403426344551.

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

It is a cyclic number.

It is not a de Polignac number, because 1554436243043 - 2¹⁰ = 1554436242019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1554436242985 and 1554436243003.

It is not an unprimeable number, because it can be changed into a prime (1554436243643) 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, 5216228855 + ... + 5216229152.

It is an arithmetic number, because the mean of its divisors is an integer number (391217175300).

Almost surely, 2^{1554436243043} is an apocalyptic number.

1554436243043 is a deficient number, since it is larger than the sum of its proper divisors (10432458157).

1554436243043 is a wasteful number, since it uses less digits than its factorization.

1554436243043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10432458156.

The product of its (nonzero) digits is 2073600, while the sum is 44.

The spelling of 1554436243043 in words is "one trillion, five hundred fifty-four billion, four hundred thirty-six million, two hundred forty-three thousand, forty-three".