2621066545387 has 2 divisors, whose sum is σ = 2621066545388. Its totient is φ = 2621066545386.

The previous prime is 2621066545381. The next prime is 2621066545393. The reversal of 2621066545387 is 7835456601262.

2621066545387 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a balanced prime because it is at equal distance from previous prime (2621066545381) and next prime (2621066545393).

It is a cyclic number.

It is not a de Polignac number, because 2621066545387 - 2⁷ = 2621066545259 is a prime.

It is not a weakly prime, because it can be changed into another prime (2621066545381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1310533272693 + 1310533272694.

It is an arithmetic number, because the mean of its divisors is an integer number (1310533272694).

Almost surely, 2^{2621066545387} is an apocalyptic number.

2621066545387 is a deficient number, since it is larger than the sum of its proper divisors (1).

2621066545387 is an equidigital number, since it uses as much as digits as its factorization.

2621066545387 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14515200, while the sum is 55.

The spelling of 2621066545387 in words is "two trillion, six hundred twenty-one billion, sixty-six million, five hundred forty-five thousand, three hundred eighty-seven".