65500601400 has 576 divisors, whose sum is σ = 251485153920. Its totient is φ = 15741734400.

The previous prime is 65500601377. The next prime is 65500601447. The reversal of 65500601400 is 410600556.

It is a happy number.

65500601400 is a `hidden beast` number, since 6 + 5 + 50 + 0 + 601 + 4 + 0 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 27166195 + ... + 27168605.

It is an arithmetic number, because the mean of its divisors is an integer number (436606170).

Almost surely, 2^65500601400 is an apocalyptic number.

65500601400 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65500601400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (125742576960).

65500601400 is an abundant number, since it is smaller than the sum of its proper divisors (185984552520).

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

65500601400 is a wasteful number, since it uses less digits than its factorization.

65500601400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2498 (or 2477 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The spelling of 65500601400 in words is "sixty-five billion, five hundred million, six hundred one thousand, four hundred".