65838553870 has 128 divisors (see below), whose sum is σ = 129357803520. Its totient is φ = 24037171200.

The previous prime is 65838553813. The next prime is 65838553873. The reversal of 65838553870 is 7835583856.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65838553873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 237684172 + ... + 237684448.

It is an arithmetic number, because the mean of its divisors is an integer number (1010607840).

Almost surely, 2^65838553870 is an apocalyptic number.

65838553870 is a deficient number, since it is larger than the sum of its proper divisors (63519249650).

65838553870 is a wasteful number, since it uses less digits than its factorization.

65838553870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 638.

The product of its (nonzero) digits is 24192000, while the sum is 58.

The spelling of 65838553870 in words is "sixty-five billion, eight hundred thirty-eight million, five hundred fifty-three thousand, eight hundred seventy".