64161566835 has 8 divisors (see below), whose sum is σ = 102658506960. Its totient is φ = 34219502304.

The previous prime is 64161566813. The next prime is 64161566839. The reversal of 64161566835 is 53866516146.

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

It is not a de Polignac number, because 64161566835 - 2¹⁷ = 64161435763 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64161566839) 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, 2138718880 + ... + 2138718909.

It is an arithmetic number, because the mean of its divisors is an integer number (12832313370).

Almost surely, 2^64161566835 is an apocalyptic number.

64161566835 is a deficient number, since it is larger than the sum of its proper divisors (38496940125).

64161566835 is a wasteful number, since it uses less digits than its factorization.

64161566835 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4277437797.

The product of its digits is 3110400, while the sum is 51.

The spelling of 64161566835 in words is "sixty-four billion, one hundred sixty-one million, five hundred sixty-six thousand, eight hundred thirty-five".