916209820550 has 48 divisors (see below), whose sum is σ = 1714186044000. Its totient is φ = 364328870400.

The previous prime is 916209820529. The next prime is 916209820553. The reversal of 916209820550 is 55028902619.

It is a junction number, because it is equal to n+sod(n) for n = 916209820495 and 916209820504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (916209820553) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 11711966 + ... + 11789934.

It is an arithmetic number, because the mean of its divisors is an integer number (35712209250).

Almost surely, 2^916209820550 is an apocalyptic number.

916209820550 is a deficient number, since it is larger than the sum of its proper divisors (797976223450).

916209820550 is a wasteful number, since it uses less digits than its factorization.

916209820550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79361 (or 79356 counting only the distinct ones).

The product of its (nonzero) digits is 388800, while the sum is 47.

The spelling of 916209820550 in words is "nine hundred sixteen billion, two hundred nine million, eight hundred twenty thousand, five hundred fifty".