64523796480 has 1360 divisors, whose sum is σ = 287756419104. Its totient is φ = 13589544960.

The previous prime is 64523796457. The next prime is 64523796487. The reversal of 64523796480 is 8469732546.

64523796480 is a `hidden beast` number, since 6 + 4 + 523 + 79 + 6 + 48 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (1360).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64523796487) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 3795517432 + ... + 3795517448.

Almost surely, 2^64523796480 is an apocalyptic number.

64523796480 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 64523796480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (143878209552).

64523796480 is an abundant number, since it is smaller than the sum of its proper divisors (223232622624).

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

64523796480 is a wasteful number, since it uses less digits than its factorization.

64523796480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90 (or 51 counting only the distinct ones).

The product of its (nonzero) digits is 8709120, while the sum is 54.

The spelling of 64523796480 in words is "sixty-four billion, five hundred twenty-three million, seven hundred ninety-six thousand, four hundred eighty".