1464523305640 has 32 divisors (see below), whose sum is σ = 3295212921000. Its totient is φ = 585803014144.

The previous prime is 1464523305611. The next prime is 1464523305683. The reversal of 1464523305640 is 465033254641.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1035595240164 + 428928065476 = 1017642^2 + 654926^2 .

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 5866896 + ... + 6111424.

Almost surely, 2^{1464523305640} is an apocalyptic number.

1464523305640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1464523305640 is an abundant number, since it is smaller than the sum of its proper divisors (1830689615360).

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

1464523305640 is a wasteful number, since it uses less digits than its factorization.

1464523305640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 394269 (or 394265 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 43.

The spelling of 1464523305640 in words is "one trillion, four hundred sixty-four billion, five hundred twenty-three million, three hundred five thousand, six hundred forty".