7122721548 has 12 divisors (see below), whose sum is σ = 16619683640. Its totient is φ = 2374240512.

The previous prime is 7122721483. The next prime is 7122721561. The reversal of 7122721548 is 8451272217.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 296780053 + ... + 296780076.

Almost surely, 2^7122721548 is an apocalyptic number.

It is an amenable number.

7122721548 is an abundant number, since it is smaller than the sum of its proper divisors (9496962092).

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

7122721548 is a wasteful number, since it uses less digits than its factorization.

7122721548 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 593560136 (or 593560134 counting only the distinct ones).

The product of its digits is 62720, while the sum is 39.

The square root of 7122721548 is about 84396.2176166681. The cubic root of 7122721548 is about 1924.0454297331.

The spelling of 7122721548 in words is "seven billion, one hundred twenty-two million, seven hundred twenty-one thousand, five hundred forty-eight".