4520721260880 has 120 divisors (see below), whose sum is σ = 16562278830240. Its totient is φ = 1095932424960.

The previous prime is 4520721260857. The next prime is 4520721260893. The reversal of 4520721260880 is 880621270254.

4520721260880 is a `hidden beast` number, since 4 + 5 + 20 + 7 + 2 + 12 + 608 + 8 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (120).

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

It is a congruent number.

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 23 ways as a sum of consecutive naturals, for example, 285391150 + ... + 285406989.

It is an arithmetic number, because the mean of its divisors is an integer number (138018990252).

Almost surely, 2^{4520721260880} is an apocalyptic number.

4520721260880 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4520721260880 is an abundant number, since it is smaller than the sum of its proper divisors (12041557569360).

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

4520721260880 is a wasteful number, since it uses less digits than its factorization.

4520721260880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 570798169 (or 570798160 counting only the distinct ones).

The product of its (nonzero) digits is 430080, while the sum is 45.

The spelling of 4520721260880 in words is "four trillion, five hundred twenty billion, seven hundred twenty-one million, two hundred sixty thousand, eight hundred eighty".