65421426341400 has 192 divisors, whose sum is σ = 206510714611200. Its totient is φ = 17127830146560.

The previous prime is 65421426341363. The next prime is 65421426341407. The reversal of 65421426341400 is 414362412456.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65421426341407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 26168817 + ... + 28559583.

It is an arithmetic number, because the mean of its divisors is an integer number (1075576638600).

Almost surely, 2^{65421426341400} is an apocalyptic number.

65421426341400 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65421426341400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (103255357305600).

65421426341400 is an abundant number, since it is smaller than the sum of its proper divisors (141089288269800).

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

65421426341400 is a wasteful number, since it uses less digits than its factorization.

65421426341400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2391618 (or 2391609 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 42.

Adding to 65421426341400 its reverse (414362412456), we get a palindrome (65835788753856).

The spelling of 65421426341400 in words is "sixty-five trillion, four hundred twenty-one billion, four hundred twenty-six million, three hundred forty-one thousand, four hundred".