7421734705385 has 64 divisors (see below), whose sum is σ = 11958697820160. Its totient is φ = 4270333582080.

The previous prime is 7421734705379. The next prime is 7421734705447. The reversal of 7421734705385 is 5835074371247.

It is not a de Polignac number, because 7421734705385 - 2⁶ = 7421734705321 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7421734705385.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 79327544 + ... + 79421046.

It is an arithmetic number, because the mean of its divisors is an integer number (186854653440).

Almost surely, 2^{7421734705385} is an apocalyptic number.

It is an amenable number.

7421734705385 is a deficient number, since it is larger than the sum of its proper divisors (4536963114775).

7421734705385 is a wasteful number, since it uses less digits than its factorization.

7421734705385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109398.

The product of its (nonzero) digits is 19756800, while the sum is 56.

The spelling of 7421734705385 in words is "seven trillion, four hundred twenty-one billion, seven hundred thirty-four million, seven hundred five thousand, three hundred eighty-five".