820411291792 has 40 divisors (see below), whose sum is σ = 1597861520000. Its totient is φ = 408060778752.

The previous prime is 820411291771. The next prime is 820411291829. The reversal of 820411291792 is 297192114028.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17325973 + ... + 17373259.

It is an arithmetic number, because the mean of its divisors is an integer number (39946538000).

Almost surely, 2^820411291792 is an apocalyptic number.

It is an amenable number.

820411291792 is a deficient number, since it is larger than the sum of its proper divisors (777450228208).

820411291792 is a wasteful number, since it uses less digits than its factorization.

820411291792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52943 (or 52937 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 46.

The spelling of 820411291792 in words is "eight hundred twenty billion, four hundred eleven million, two hundred ninety-one thousand, seven hundred ninety-two".