4261215452640 has 48 divisors (see below), whose sum is σ = 13422828677328. Its totient is φ = 1136324120576.

The previous prime is 4261215452639. The next prime is 4261215452677. The reversal of 4261215452640 is 462545121624.

4261215452640 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (48).

It is a junction number, because it is equal to n+sod(n) for n = 4261215452592 and 4261215452601.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4438765617 + ... + 4438766576.

It is an arithmetic number, because the mean of its divisors is an integer number (279642264111).

Almost surely, 2^{4261215452640} is an apocalyptic number.

4261215452640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4261215452640 is an abundant number, since it is smaller than the sum of its proper divisors (9161613224688).

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

4261215452640 is a wasteful number, since it uses less digits than its factorization.

4261215452640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8877532211 (or 8877532203 counting only the distinct ones).

The product of its (nonzero) digits is 460800, while the sum is 42.

The spelling of 4261215452640 in words is "four trillion, two hundred sixty-one billion, two hundred fifteen million, four hundred fifty-two thousand, six hundred forty".