65497989150 has 672 divisors, whose sum is σ = 212535861120. Its totient is φ = 14859936000.

The previous prime is 65497989149. The next prime is 65497989163. The reversal of 65497989150 is 5198979456.

65497989150 is a `hidden beast` number, since 6 + 5 + 497 + 9 + 8 + 91 + 50 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 335 ways as a sum of consecutive naturals, for example, 499984585 + ... + 499984715.

Almost surely, 2^65497989150 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65497989150, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (106267930560).

65497989150 is an abundant number, since it is smaller than the sum of its proper divisors (147037871970).

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

65497989150 is a wasteful number, since it uses less digits than its factorization.

65497989150 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244 (or 224 counting only the distinct ones).

The product of its (nonzero) digits is 24494400, while the sum is 63.

The spelling of 65497989150 in words is "sixty-five billion, four hundred ninety-seven million, nine hundred eighty-nine thousand, one hundred fifty".