65490214122 has 192 divisors, whose sum is σ = 156920924160. Its totient is φ = 20427422400.

The previous prime is 65490214109. The next prime is 65490214147. The reversal of 65490214122 is 22141209456.

It is a happy number.

65490214122 is a `hidden beast` number, since 6 + 5 + 490 + 2 + 141 + 22 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 142060972 + ... + 142061432.

It is an arithmetic number, because the mean of its divisors is an integer number (817296480).

Almost surely, 2^65490214122 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65490214122, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78460462080).

65490214122 is an abundant number, since it is smaller than the sum of its proper divisors (91430710038).

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

65490214122 is a wasteful number, since it uses less digits than its factorization.

65490214122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 751 (or 739 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The spelling of 65490214122 in words is "sixty-five billion, four hundred ninety million, two hundred fourteen thousand, one hundred twenty-two".