642554644510152 has 96 divisors (see below), whose sum is σ = 1899929720988000. Its totient is φ = 194562470511360.

The previous prime is 642554644510151. The next prime is 642554644510231. The reversal of 642554644510152 is 251015446455246.

642554644510152 is a `hidden beast` number, since 6 + 4 + 2 + 5 + 5 + 46 + 445 + 1 + 0 + 152 = 666.

It is not an unprimeable number, because it can be changed into a prime (642554644510151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 313682902 + ... + 315724677.

It is an arithmetic number, because the mean of its divisors is an integer number (19790934593625).

Almost surely, 2^{642554644510152} is an apocalyptic number.

It is an amenable number.

642554644510152 is an abundant number, since it is smaller than the sum of its proper divisors (1257375076477848).

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

642554644510152 is a wasteful number, since it uses less digits than its factorization.

642554644510152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 629408891 (or 629408884 counting only the distinct ones).

The product of its (nonzero) digits is 23040000, while the sum is 54.

The spelling of 642554644510152 in words is "six hundred forty-two trillion, five hundred fifty-four billion, six hundred forty-four million, five hundred ten thousand, one hundred fifty-two".