64420332694 has 8 divisors (see below), whose sum is σ = 101716314840. Its totient is φ = 30514894416.

The previous prime is 64420332643. The next prime is 64420332727. The reversal of 64420332694 is 49623302446.

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

It is a self number, because there is not a number n which added to its sum of digits gives 64420332694.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 847635919 + ... + 847635994.

It is an arithmetic number, because the mean of its divisors is an integer number (12714539355).

Almost surely, 2^64420332694 is an apocalyptic number.

64420332694 is a deficient number, since it is larger than the sum of its proper divisors (37295982146).

64420332694 is a wasteful number, since it uses less digits than its factorization.

64420332694 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1695271934.

The product of its (nonzero) digits is 746496, while the sum is 43.

The spelling of 64420332694 in words is "sixty-four billion, four hundred twenty million, three hundred thirty-two thousand, six hundred ninety-four".