1155801005816 has 32 divisors (see below), whose sum is σ = 2176604892000. Its totient is φ = 575376210816.

The previous prime is 1155801005797. The next prime is 1155801005833. The reversal of 1155801005816 is 6185001085511.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 2725190 + ... + 3120618.

It is an arithmetic number, because the mean of its divisors is an integer number (68018902875).

Almost surely, 2^{1155801005816} is an apocalyptic number.

It is an amenable number.

1155801005816 is a deficient number, since it is larger than the sum of its proper divisors (1020803886184).

1155801005816 is a wasteful number, since it uses less digits than its factorization.

1155801005816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 397031 (or 397027 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 41.

The spelling of 1155801005816 in words is "one trillion, one hundred fifty-five billion, eight hundred one million, five thousand, eight hundred sixteen".