64255400144 has 20 divisors (see below), whose sum is σ = 134071364196. Its totient is φ = 29656338432.

The previous prime is 64255400107. The next prime is 64255400147. The reversal of 64255400144 is 44100455246.

It can be written as a sum of positive squares in 2 ways, for example, as 25603840144 + 38651560000 = 160012^2 + 196600^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64255400147) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 154459889 + ... + 154460304.

Almost surely, 2^64255400144 is an apocalyptic number.

It is an amenable number.

64255400144 is an abundant number, since it is smaller than the sum of its proper divisors (69815964052).

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

64255400144 is a wasteful number, since it uses less digits than its factorization.

64255400144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 308920214 (or 308920208 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 35.

The spelling of 64255400144 in words is "sixty-four billion, two hundred fifty-five million, four hundred thousand, one hundred forty-four".