65222088400 has 120 divisors (see below), whose sum is σ = 179168532480. Its totient is φ = 22350958080.

The previous prime is 65222088359. The next prime is 65222088461. The reversal of 65222088400 is 488022256.

65222088400 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 65222088400.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7519266 + ... + 7527934.

It is an arithmetic number, because the mean of its divisors is an integer number (1493071104).

Almost surely, 2^65222088400 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 65222088400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89584266240).

65222088400 is an abundant number, since it is smaller than the sum of its proper divisors (113946444080).

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

65222088400 is a wasteful number, since it uses less digits than its factorization.

65222088400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11381 (or 11370 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 37.

The spelling of 65222088400 in words is "sixty-five billion, two hundred twenty-two million, eighty-eight thousand, four hundred".