7445621839412 has 6 divisors (see below), whose sum is σ = 13029838218978. Its totient is φ = 3722810919704.

The previous prime is 7445621839391. The next prime is 7445621839423. The reversal of 7445621839412 is 2149381265447.

It can be written as a sum of positive squares in only one way, i.e., 7426246312996 + 19375526416 = 2725114^2 + 139196^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 930702729923 + ... + 930702729930.

It is an arithmetic number, because the mean of its divisors is an integer number (2171639703163).

Almost surely, 2^{7445621839412} is an apocalyptic number.

It is an amenable number.

7445621839412 is a deficient number, since it is larger than the sum of its proper divisors (5584216379566).

7445621839412 is a wasteful number, since it uses less digits than its factorization.

7445621839412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1861405459857 (or 1861405459855 counting only the distinct ones).

The product of its digits is 11612160, while the sum is 56.

The spelling of 7445621839412 in words is "seven trillion, four hundred forty-five billion, six hundred twenty-one million, eight hundred thirty-nine thousand, four hundred twelve".