64223771760 has 60 divisors (see below), whose sum is σ = 215684835912. Its totient is φ = 17126338944.

The previous prime is 64223771713. The next prime is 64223771761. The reversal of 64223771760 is 6717732246.

64223771760 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (60).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64223771761) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 44599122 + ... + 44600561.

Almost surely, 2^64223771760 is an apocalyptic number.

64223771760 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

64223771760 is an abundant number, since it is smaller than the sum of its proper divisors (151461064152).

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

64223771760 is a wasteful number, since it uses less digits than its factorization.

64223771760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89199702 (or 89199693 counting only the distinct ones).

The product of its (nonzero) digits is 592704, while the sum is 45.

The spelling of 64223771760 in words is "sixty-four billion, two hundred twenty-three million, seven hundred seventy-one thousand, seven hundred sixty".