64289199320 has 32 divisors (see below), whose sum is σ = 144723240000. Its totient is φ = 25702783488.

The previous prime is 64289199313. The next prime is 64289199329. The reversal of 64289199320 is 2399198246.

It is a super-2 number, since 2×64289199320² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64289199329) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 322049 + ... + 481968.

It is an arithmetic number, because the mean of its divisors is an integer number (4522601250).

Almost surely, 2^64289199320 is an apocalyptic number.

It is an amenable number.

64289199320 is an abundant number, since it is smaller than the sum of its proper divisors (80434040680).

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

64289199320 is a wasteful number, since it uses less digits than its factorization.

64289199320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 806027 (or 806023 counting only the distinct ones).

The product of its (nonzero) digits is 1679616, while the sum is 53.

The spelling of 64289199320 in words is "sixty-four billion, two hundred eighty-nine million, one hundred ninety-nine thousand, three hundred twenty".