464447221303540 has 48 divisors (see below), whose sum is σ = 1052839878007680. Its totient is φ = 171573906035840.

The previous prime is 464447221303531. The next prime is 464447221303547. The reversal of 464447221303540 is 45303122744464.

It is a super-2 number, since 2×464447221303540² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (464447221303547) 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 15 ways as a sum of consecutive naturals, for example, 17408053426 + ... + 17408080105.

It is an arithmetic number, because the mean of its divisors is an integer number (21934164125160).

Almost surely, 2^{464447221303540} is an apocalyptic number.

It is an amenable number.

464447221303540 is an abundant number, since it is smaller than the sum of its proper divisors (588392656704140).

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

464447221303540 is a wasteful number, since it uses less digits than its factorization.

464447221303540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34816133592 (or 34816133590 counting only the distinct ones).

The product of its (nonzero) digits is 7741440, while the sum is 49.

The spelling of 464447221303540 in words is "four hundred sixty-four trillion, four hundred forty-seven billion, two hundred twenty-one million, three hundred three thousand, five hundred forty".