1556202040041 has 32 divisors (see below), whose sum is σ = 2447711612928. Its totient is φ = 868786499840.

The previous prime is 1556202039971. The next prime is 1556202040061. The reversal of 1556202040041 is 1400402026551.

It is a cyclic number.

It is not a de Polignac number, because 1556202040041 - 2⁷ = 1556202039913 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1556202039990 and 1556202040008.

It is not an unprimeable number, because it can be changed into a prime (1556202040061) 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 in 31 ways as a sum of consecutive naturals, for example, 29484045 + ... + 29536778.

It is an arithmetic number, because the mean of its divisors is an integer number (76490987904).

Almost surely, 2^{1556202040041} is an apocalyptic number.

1556202040041 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1556202040041 is a deficient number, since it is larger than the sum of its proper divisors (891509572887).

1556202040041 is a wasteful number, since it uses less digits than its factorization.

1556202040041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59020901.

The product of its (nonzero) digits is 9600, while the sum is 30.

Adding to 1556202040041 its reverse (1400402026551), we get a palindrome (2956604066592).

The spelling of 1556202040041 in words is "one trillion, five hundred fifty-six billion, two hundred two million, forty thousand, forty-one".