65423641201450 has 144 divisors (see below), whose sum is σ = 143037363694680. Its totient is φ = 22196202577920.

The previous prime is 65423641201433. The next prime is 65423641201511. The reversal of 65423641201450 is 5410214632456.

It can be written as a sum of positive squares in 12 ways, for example, as 20626066977649 + 44797574223801 = 4541593^2 + 6693099^2 .

It is a junction number, because it is equal to n+sod(n) for n = 65423641201397 and 65423641201406.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1822519902 + ... + 1822555798.

Almost surely, 2^{65423641201450} is an apocalyptic number.

65423641201450 is an abundant number, since it is smaller than the sum of its proper divisors (77613722493230).

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

65423641201450 is a wasteful number, since it uses less digits than its factorization.

65423641201450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43689 (or 43677 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 43.

The spelling of 65423641201450 in words is "sixty-five trillion, four hundred twenty-three billion, six hundred forty-one million, two hundred one thousand, four hundred fifty".