65247450020 has 24 divisors (see below), whose sum is σ = 140361589368. Its totient is φ = 25462419200.

The previous prime is 65247450017. The next prime is 65247450029. The reversal of 65247450020 is 2005474256.

It can be written as a sum of positive squares in 4 ways, for example, as 5378168896 + 59869281124 = 73336^2 + 244682^2 .

It is a super-3 number, since 3×65247450020³ (a number of 33 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (65247450029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39784211 + ... + 39785850.

It is an arithmetic number, because the mean of its divisors is an integer number (5848399557).

Almost surely, 2^65247450020 is an apocalyptic number.

It is an amenable number.

65247450020 is an abundant number, since it is smaller than the sum of its proper divisors (75114139348).

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

65247450020 is a wasteful number, since it uses less digits than its factorization.

65247450020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79570111 (or 79570109 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 35.

The spelling of 65247450020 in words is "sixty-five billion, two hundred forty-seven million, four hundred fifty thousand, twenty".