7123621832 has 16 divisors (see below), whose sum is σ = 13667414640. Its totient is φ = 3478977936.

The previous prime is 7123621823. The next prime is 7123621837. The reversal of 7123621832 is 2381263217.

Added to its reverse (2381263217) it gives a square (9504885049 = 97493²).

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 7123621792 and 7123621801.

It is not an unprimeable number, because it can be changed into a prime (7123621837) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10353758 + ... + 10354445.

It is an arithmetic number, because the mean of its divisors is an integer number (854213415).

Almost surely, 2^7123621832 is an apocalyptic number.

It is an amenable number.

7123621832 is a deficient number, since it is larger than the sum of its proper divisors (6543792808).

7123621832 is a wasteful number, since it uses less digits than its factorization.

7123621832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20708252 (or 20708248 counting only the distinct ones).

The product of its digits is 24192, while the sum is 35.

The square root of 7123621832 is about 84401.5511231873. The cubic root of 7123621832 is about 1924.1264902439.

Adding to 7123621832 its reverse (2381263217), we get a square (9504885049 = 97493²).

The spelling of 7123621832 in words is "seven billion, one hundred twenty-three million, six hundred twenty-one thousand, eight hundred thirty-two".