64696203888 has 40 divisors (see below), whose sum is σ = 169145507328. Its totient is φ = 21305575872.

The previous prime is 64696203851. The next prime is 64696203941. The reversal of 64696203888 is 88830269646.

It is a congruent number.

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, 8115520 + ... + 8123487.

Almost surely, 2^64696203888 is an apocalyptic number.

It is an amenable number.

64696203888 is an abundant number, since it is smaller than the sum of its proper divisors (104449303440).

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

64696203888 is a wasteful number, since it uses less digits than its factorization.

64696203888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16239101 (or 16239095 counting only the distinct ones).

The product of its (nonzero) digits is 23887872, while the sum is 60.

The spelling of 64696203888 in words is "sixty-four billion, six hundred ninety-six million, two hundred three thousand, eight hundred eighty-eight".