65620061985 has 8 divisors (see below), whose sum is σ = 104992099200. Its totient is φ = 34997366384.

The previous prime is 65620061959. The next prime is 65620062017. The reversal of 65620061985 is 58916002656.

65620061985 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 65620061985 - 2¹⁷ = 65619930913 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2187335385 + ... + 2187335414.

It is an arithmetic number, because the mean of its divisors is an integer number (13124012400).

Almost surely, 2^65620061985 is an apocalyptic number.

It is an amenable number.

65620061985 is a deficient number, since it is larger than the sum of its proper divisors (39372037215).

65620061985 is a wasteful number, since it uses less digits than its factorization.

65620061985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4374670807.

The product of its (nonzero) digits is 777600, while the sum is 48.

The spelling of 65620061985 in words is "sixty-five billion, six hundred twenty million, sixty-one thousand, nine hundred eighty-five".