65906402420 has 24 divisors (see below), whose sum is σ = 139399159200. Its totient is φ = 26172901152.

The previous prime is 65906402413. The next prime is 65906402423. The reversal of 65906402420 is 2420460956.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65906402423) 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 7 ways as a sum of consecutive naturals, for example, 11850890 + ... + 11856449.

It is an arithmetic number, because the mean of its divisors is an integer number (5808298300).

Almost surely, 2^65906402420 is an apocalyptic number.

It is an amenable number.

65906402420 is an abundant number, since it is smaller than the sum of its proper divisors (73492756780).

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

65906402420 is a wasteful number, since it uses less digits than its factorization.

65906402420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23707487 (or 23707485 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 38.

The spelling of 65906402420 in words is "sixty-five billion, nine hundred six million, four hundred two thousand, four hundred twenty".