7240720615772 has 12 divisors (see below), whose sum is σ = 14481441231600. Its totient is φ = 3103165978176.

The previous prime is 7240720615771. The next prime is 7240720615811. The reversal of 7240720615772 is 2775160270427.

7240720615772 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 7240720615772.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7240720615771) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 129298582397 + ... + 129298582452.

It is an arithmetic number, because the mean of its divisors is an integer number (1206786769300).

Almost surely, 2^{7240720615772} is an apocalyptic number.

It is an amenable number.

7240720615772 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

7240720615772 is a wasteful number, since it uses less digits than its factorization.

7240720615772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258597164860 (or 258597164858 counting only the distinct ones).

The product of its (nonzero) digits is 2304960, while the sum is 50.

The spelling of 7240720615772 in words is "seven trillion, two hundred forty billion, seven hundred twenty million, six hundred fifteen thousand, seven hundred seventy-two".