64021693324 has 12 divisors (see below), whose sum is σ = 112779937648. Its totient is φ = 31798854000.

The previous prime is 64021693273. The next prime is 64021693339. The reversal of 64021693324 is 42339612046.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52997487 + ... + 52998694.

Almost surely, 2^64021693324 is an apocalyptic number.

It is an amenable number.

64021693324 is a deficient number, since it is larger than the sum of its proper divisors (48758244324).

64021693324 is a wasteful number, since it uses less digits than its factorization.

64021693324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105996336 (or 105996334 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 40.

The spelling of 64021693324 in words is "sixty-four billion, twenty-one million, six hundred ninety-three thousand, three hundred twenty-four".