64953995580 has 240 divisors, whose sum is σ = 212883922944. Its totient is φ = 16559303040.

The previous prime is 64953995563. The next prime is 64953995581. The reversal of 64953995580 is 8559935946.

64953995580 is a `hidden beast` number, since 6 + 4 + 9 + 539 + 95 + 5 + 8 + 0 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64953995581) 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, 4160469 + ... + 4176051.

Almost surely, 2^64953995580 is an apocalyptic number.

64953995580 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 64953995580, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (106441961472).

64953995580 is an abundant number, since it is smaller than the sum of its proper divisors (147929927364).

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

64953995580 is a wasteful number, since it uses less digits than its factorization.

64953995580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15718 (or 15707 counting only the distinct ones).

The product of its (nonzero) digits is 52488000, while the sum is 63.

The spelling of 64953995580 in words is "sixty-four billion, nine hundred fifty-three million, nine hundred ninety-five thousand, five hundred eighty".