64420650334 has 12 divisors (see below), whose sum is σ = 99045317952. Its totient is φ = 31424705840.

The previous prime is 64420650331. The next prime is 64420650341. The reversal of 64420650334 is 43305602446.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 64420650293 and 64420650302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64420650331) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9577342 + ... + 9584065.

It is an arithmetic number, because the mean of its divisors is an integer number (8253776496).

Almost surely, 2^64420650334 is an apocalyptic number.

64420650334 is a deficient number, since it is larger than the sum of its proper divisors (34624667618).

64420650334 is a wasteful number, since it uses less digits than its factorization.

64420650334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19161491 (or 19161450 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 37.

The spelling of 64420650334 in words is "sixty-four billion, four hundred twenty million, six hundred fifty thousand, three hundred thirty-four".