3721043266560 has 1760 divisors, whose sum is σ = 14463081971712. Its totient is φ = 912994467840.

The previous prime is 3721043266547. The next prime is 3721043266657. The reversal of 3721043266560 is 656623401273.

3721043266560 is a `hidden beast` number, since 3 + 7 + 21 + 0 + 4 + 3 + 2 + 66 + 560 = 666.

It is a super-2 number, since 2×3721043266560² (a number of 26 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

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 159 ways as a sum of consecutive naturals, for example, 29299553217 + ... + 29299553343.

Almost surely, 2^{3721043266560} is an apocalyptic number.

3721043266560 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3721043266560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7231540985856).

3721043266560 is an abundant number, since it is smaller than the sum of its proper divisors (10742038705152).

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

3721043266560 is a wasteful number, since it uses less digits than its factorization.

3721043266560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291 (or 264 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 45.

The spelling of 3721043266560 in words is "three trillion, seven hundred twenty-one billion, forty-three million, two hundred sixty-six thousand, five hundred sixty".