64622517552 has 160 divisors (see below), whose sum is σ = 189583580160. Its totient is φ = 21068087040.

The previous prime is 64622517551. The next prime is 64622517563. The reversal of 64622517552 is 25571522646.

64622517552 is a `hidden beast` number, since 6 + 4 + 62 + 25 + 17 + 552 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 64622517498 and 64622517507.

It is not an unprimeable number, because it can be changed into a prime (64622517551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7574313 + ... + 7582839.

It is an arithmetic number, because the mean of its divisors is an integer number (1184897376).

Almost surely, 2^64622517552 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64622517552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94791790080).

64622517552 is an abundant number, since it is smaller than the sum of its proper divisors (124961062608).

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

64622517552 is a wasteful number, since it uses less digits than its factorization.

64622517552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8928 (or 8916 counting only the distinct ones).

The product of its digits is 1008000, while the sum is 45.

The spelling of 64622517552 in words is "sixty-four billion, six hundred twenty-two million, five hundred seventeen thousand, five hundred fifty-two".