7446251121920 has 72 divisors (see below), whose sum is σ = 19208106001896. Its totient is φ = 2749385023488.

The previous prime is 7446251121919. The next prime is 7446251121931. The reversal of 7446251121920 is 291211526447.

It can be written as a sum of positive squares in 4 ways, for example, as 1555028952064 + 5891222169856 = 1247008^2 + 2427184^2 .

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, 223728887 + ... + 223762166.

Almost surely, 2^{7446251121920} is an apocalyptic number.

It is an amenable number.

7446251121920 is an abundant number, since it is smaller than the sum of its proper divisors (11761854879976).

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

7446251121920 is a wasteful number, since it uses less digits than its factorization.

7446251121920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 447491087 (or 447491073 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 44.

The spelling of 7446251121920 in words is "seven trillion, four hundred forty-six billion, two hundred fifty-one million, one hundred twenty-one thousand, nine hundred twenty".