609256741400 has 96 divisors (see below), whose sum is σ = 1443841673040. Its totient is φ = 239033794560.

The previous prime is 609256741381. The next prime is 609256741403. The reversal of 609256741400 is 4147652906.

It is a Cunningham number, because it is equal to 780549²-1.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (609256741403) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3024632 + ... + 3219768.

Almost surely, 2^609256741400 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 609256741400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (721920836520).

609256741400 is an abundant number, since it is smaller than the sum of its proper divisors (834584931640).

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

609256741400 is a wasteful number, since it uses less digits than its factorization.

609256741400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195453 (or 195444 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 44.

The spelling of 609256741400 in words is "six hundred nine billion, two hundred fifty-six million, seven hundred forty-one thousand, four hundred".