64466031420 has 72 divisors (see below), whose sum is σ = 223482246624. Its totient is φ = 14735092608.

The previous prime is 64466031353. The next prime is 64466031457. The reversal of 64466031420 is 2413066446.

64466031420 is a `hidden beast` number, since 6 + 4 + 4 + 6 + 603 + 1 + 42 + 0 = 666.

64466031420 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25580499 + ... + 25583018.

It is an arithmetic number, because the mean of its divisors is an integer number (3103920092).

Almost surely, 2^64466031420 is an apocalyptic number.

64466031420 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

64466031420 is an abundant number, since it is smaller than the sum of its proper divisors (159016215204).

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

64466031420 is a wasteful number, since it uses less digits than its factorization.

64466031420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51163539 (or 51163534 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 36.

Adding to 64466031420 its reverse (2413066446), we get a palindrome (66879097866).

The spelling of 64466031420 in words is "sixty-four billion, four hundred sixty-six million, thirty-one thousand, four hundred twenty".