65215420410 has 192 divisors, whose sum is σ = 188338841856. Its totient is φ = 14146928640.

The previous prime is 65215420397. The next prime is 65215420411. The reversal of 65215420410 is 1402451256.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (65215420411) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 13058874 + ... + 13063866.

It is an arithmetic number, because the mean of its divisors is an integer number (980931468).

Almost surely, 2^65215420410 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65215420410, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94169420928).

65215420410 is an abundant number, since it is smaller than the sum of its proper divisors (123123421446).

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

65215420410 is a wasteful number, since it uses less digits than its factorization.

65215420410 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5129 (or 5088 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 30.

Adding to 65215420410 its reverse (1402451256), we get a palindrome (66617871666).

The spelling of 65215420410 in words is "sixty-five billion, two hundred fifteen million, four hundred twenty thousand, four hundred ten".