65436754420 has 24 divisors (see below), whose sum is σ = 137434969224. Its totient is φ = 26171314176.

The previous prime is 65436754381. The next prime is 65436754423. The reversal of 65436754420 is 2445763456.

It can be written as a sum of positive squares in 4 ways, for example, as 8316710416 + 57120044004 = 91196^2 + 238998^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65436754423) 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, 50329 + ... + 365248.

It is an arithmetic number, because the mean of its divisors is an integer number (5726457051).

Almost surely, 2^65436754420 is an apocalyptic number.

It is an amenable number.

65436754420 is an abundant number, since it is smaller than the sum of its proper divisors (71998214804).

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

65436754420 is a wasteful number, since it uses less digits than its factorization.

65436754420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 423459 (or 423457 counting only the distinct ones).

The product of its (nonzero) digits is 2419200, while the sum is 46.

The spelling of 65436754420 in words is "sixty-five billion, four hundred thirty-six million, seven hundred fifty-four thousand, four hundred twenty".