64266220500 has 192 divisors, whose sum is σ = 196719763968. Its totient is φ = 16271692800.

The previous prime is 64266220493. The next prime is 64266220517. The reversal of 64266220500 is 502266246.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4719702 + ... + 4733298.

It is an arithmetic number, because the mean of its divisors is an integer number (1024582104).

Almost surely, 2^64266220500 is an apocalyptic number.

64266220500 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64266220500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98359881984).

64266220500 is an abundant number, since it is smaller than the sum of its proper divisors (132453543468).

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

64266220500 is a wasteful number, since it uses less digits than its factorization.

64266220500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13779 (or 13767 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 33.

Adding to 64266220500 its reverse (502266246), we get a palindrome (64768486746).

The spelling of 64266220500 in words is "sixty-four billion, two hundred sixty-six million, two hundred twenty thousand, five hundred".