609098861800 has 768 divisors, whose sum is σ = 1780423545600. Its totient is φ = 190771200000.

The previous prime is 609098861743. The next prime is 609098861831. The reversal of 609098861800 is 8168890906.

It is a Harshad number since it is a multiple of its sum of digits (55).

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 191 ways as a sum of consecutive naturals, for example, 4382006131 + ... + 4382006269.

It is an arithmetic number, because the mean of its divisors is an integer number (2318259825).

Almost surely, 2^609098861800 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 609098861800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (890211772800).

609098861800 is an abundant number, since it is smaller than the sum of its proper divisors (1171324683800).

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

609098861800 is a wasteful number, since it uses less digits than its factorization.

609098861800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 358 (or 349 counting only the distinct ones).

The product of its (nonzero) digits is 1492992, while the sum is 55.

The spelling of 609098861800 in words is "six hundred nine billion, ninety-eight million, eight hundred sixty-one thousand, eight hundred".