7420408443540 has 72 divisors (see below), whose sum is σ = 22514898631680. Its totient is φ = 1978219422144.

The previous prime is 7420408443533. The next prime is 7420408443551. The reversal of 7420408443540 is 453448040247.

7420408443540 is a `hidden beast` number, since 7 + 4 + 20 + 4 + 0 + 84 + 4 + 3 + 540 = 666.

It is a super-2 number, since 2×7420408443540² (a number of 27 digits) contains 22 as substring.

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 polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5150964 + ... + 6432203.

It is an arithmetic number, because the mean of its divisors is an integer number (312706925440).

Almost surely, 2^{7420408443540} is an apocalyptic number.

It is an amenable number.

7420408443540 is an abundant number, since it is smaller than the sum of its proper divisors (15094490188140).

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

7420408443540 is a wasteful number, since it uses less digits than its factorization.

7420408443540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11586741 (or 11586736 counting only the distinct ones).

The product of its (nonzero) digits is 1720320, while the sum is 45.

The spelling of 7420408443540 in words is "seven trillion, four hundred twenty billion, four hundred eight million, four hundred forty-three thousand, five hundred forty".