64335232020 has 48 divisors (see below), whose sum is σ = 180149755968. Its totient is φ = 17155004160.

The previous prime is 64335232019. The next prime is 64335232063. The reversal of 64335232020 is 2023253346.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1694040 + ... + 1731600.

It is an arithmetic number, because the mean of its divisors is an integer number (3753119916).

Almost surely, 2^64335232020 is an apocalyptic number.

64335232020 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

64335232020 is an abundant number, since it is smaller than the sum of its proper divisors (115814523948).

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

64335232020 is a wasteful number, since it uses less digits than its factorization.

64335232020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66120 (or 66118 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 30.

Adding to 64335232020 its reverse (2023253346), we get a palindrome (66358485366).

The spelling of 64335232020 in words is "sixty-four billion, three hundred thirty-five million, two hundred thirty-two thousand, twenty".