7217473748540 has 24 divisors (see below), whose sum is σ = 16534576224432. Its totient is φ = 2624535908480.

The previous prime is 7217473748531. The next prime is 7217473748587. The reversal of 7217473748540 is 458473747127.

It is a self number, because there is not a number n which added to its sum of digits gives 7217473748540.

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, 16403349209 + ... + 16403349648.

It is an arithmetic number, because the mean of its divisors is an integer number (688940676018).

Almost surely, 2^{7217473748540} is an apocalyptic number.

It is an amenable number.

7217473748540 is an abundant number, since it is smaller than the sum of its proper divisors (9317102475892).

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

7217473748540 is a wasteful number, since it uses less digits than its factorization.

7217473748540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32806698877 (or 32806698875 counting only the distinct ones).

The product of its (nonzero) digits is 36879360, while the sum is 59.

The spelling of 7217473748540 in words is "seven trillion, two hundred seventeen billion, four hundred seventy-three million, seven hundred forty-eight thousand, five hundred forty".