7621861484057 has 2 divisors, whose sum is σ = 7621861484058. Its totient is φ = 7621861484056.

The previous prime is 7621861484051. The next prime is 7621861484161. The reversal of 7621861484057 is 7504841681267.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6589160428096 + 1032701055961 = 2566936^2 + 1016219^2 .

It is a cyclic number.

It is not a de Polignac number, because 7621861484057 - 2²⁶ = 7621794375193 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7621861483987 and 7621861484005.

It is not a weakly prime, because it can be changed into another prime (7621861484051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3810930742028 + 3810930742029.

It is an arithmetic number, because the mean of its divisors is an integer number (3810930742029).

Almost surely, 2^{7621861484057} is an apocalyptic number.

It is an amenable number.

7621861484057 is a deficient number, since it is larger than the sum of its proper divisors (1).

7621861484057 is an equidigital number, since it uses as much as digits as its factorization.

7621861484057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18063360, while the sum is 59.

The spelling of 7621861484057 in words is "seven trillion, six hundred twenty-one billion, eight hundred sixty-one million, four hundred eighty-four thousand, fifty-seven".