215486849077 has 2 divisors, whose sum is σ = 215486849078. Its totient is φ = 215486849076.

The previous prime is 215486849047. The next prime is 215486849107. The reversal of 215486849077 is 770948684512.

It is a balanced prime because it is at equal distance from previous prime (215486849047) and next prime (215486849107).

It can be written as a sum of positive squares in only one way, i.e., 146586373956 + 68900475121 = 382866^2 + 262489^2 .

It is a cyclic number.

It is not a de Polignac number, because 215486849077 - 2³⁵ = 181127110709 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (215486849027) 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, 107743424538 + 107743424539.

It is an arithmetic number, because the mean of its divisors is an integer number (107743424539).

Almost surely, 2^215486849077 is an apocalyptic number.

It is an amenable number.

215486849077 is a deficient number, since it is larger than the sum of its proper divisors (1).

215486849077 is an equidigital number, since it uses as much as digits as its factorization.

215486849077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27095040, while the sum is 61.

The spelling of 215486849077 in words is "two hundred fifteen billion, four hundred eighty-six million, eight hundred forty-nine thousand, seventy-seven".