64156875552 has 1008 divisors, whose sum is σ = 253207213056. Its totient is φ = 15601766400.

The previous prime is 64156875547. The next prime is 64156875577. The reversal of 64156875552 is 25557865146.

64156875552 is a `hidden beast` number, since 6 + 4 + 1 + 5 + 6 + 87 + 5 + 552 = 666.

It is a tau number, because it is divible by the number of its divisors (1008).

It is a super-2 number, since 2×64156875552² (a number of 22 digits) contains 22 as substring.

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

It is an unprimeable number.

It is a polite number, since it can be written in 167 ways as a sum of consecutive naturals, for example, 335899777 + ... + 335899967.

It is an arithmetic number, because the mean of its divisors is an integer number (251197632).

Almost surely, 2^64156875552 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 64156875552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (126603606528).

64156875552 is an abundant number, since it is smaller than the sum of its proper divisors (189050337504).

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

64156875552 is a wasteful number, since it uses less digits than its factorization.

64156875552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265 (or 231 counting only the distinct ones).

The product of its digits is 10080000, while the sum is 54.

The spelling of 64156875552 in words is "sixty-four billion, one hundred fifty-six million, eight hundred seventy-five thousand, five hundred fifty-two".