556821357950 has 192 divisors, whose sum is σ = 1228893845760. Its totient is φ = 185048064000.

The previous prime is 556821357947. The next prime is 556821358057. The reversal of 556821357950 is 59753128655.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 573450965 + ... + 573451935.

It is an arithmetic number, because the mean of its divisors is an integer number (6400488780).

Almost surely, 2^556821357950 is an apocalyptic number.

556821357950 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

556821357950 is an abundant number, since it is smaller than the sum of its proper divisors (672072487810).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

556821357950 is a wasteful number, since it uses less digits than its factorization.

556821357950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1723 (or 1718 counting only the distinct ones).

The product of its (nonzero) digits is 11340000, while the sum is 56.

The spelling of 556821357950 in words is "five hundred fifty-six billion, eight hundred twenty-one million, three hundred fifty-seven thousand, nine hundred fifty".