7621333541 has 2 divisors, whose sum is σ = 7621333542. Its totient is φ = 7621333540.

The previous prime is 7621333507. The next prime is 7621333543. The reversal of 7621333541 is 1453331267.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6868928641 + 752404900 = 82879^2 + 27430^2 .

It is an emirp because it is prime and its reverse (1453331267) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7621333541 is a prime.

Together with 7621333543, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7621333543) by changing a digit.

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 as a sum of consecutive naturals, namely, 3810666770 + 3810666771.

It is an arithmetic number, because the mean of its divisors is an integer number (3810666771).

Almost surely, 2^7621333541 is an apocalyptic number.

It is an amenable number.

7621333541 is a deficient number, since it is larger than the sum of its proper divisors (1).

7621333541 is an equidigital number, since it uses as much as digits as its factorization.

7621333541 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 45360, while the sum is 35.

The square root of 7621333541 is about 87300.2493753597. The cubic root of 7621333541 is about 1967.9330654418.

The spelling of 7621333541 in words is "seven billion, six hundred twenty-one million, three hundred thirty-three thousand, five hundred forty-one".