7122620463440 has 40 divisors (see below), whose sum is σ = 17534215673640. Its totient is φ = 2681457115136.

The previous prime is 7122620463419. The next prime is 7122620463461. The reversal of 7122620463440 is 443640262217.

It is an interprime number because it is at equal distance from previous prime (7122620463419) and next prime (7122620463461).

It can be written as a sum of positive squares in 4 ways, for example, as 616407133456 + 6506213329984 = 785116^2 + 2550728^2 .

It is a tau number, because it is divible by the number of its divisors (40).

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, 2618609105 + ... + 2618611824.

It is an arithmetic number, because the mean of its divisors is an integer number (438355391841).

Almost surely, 2^{7122620463440} is an apocalyptic number.

It is an amenable number.

7122620463440 is an abundant number, since it is smaller than the sum of its proper divisors (10411595210200).

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

7122620463440 is a wasteful number, since it uses less digits than its factorization.

7122620463440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5237220959 (or 5237220953 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 41.

The spelling of 7122620463440 in words is "seven trillion, one hundred twenty-two billion, six hundred twenty million, four hundred sixty-three thousand, four hundred forty".