101819165477 has 2 divisors, whose sum is σ = 101819165478. Its totient is φ = 101819165476.

The previous prime is 101819165401. The next prime is 101819165527. The reversal of 101819165477 is 774561918101.

It is an a-pointer prime, because the next prime (101819165527) can be obtained adding 101819165477 to its sum of digits (50).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 87597648961 + 14221516516 = 295969^2 + 119254^2 .

It is an emirp because it is prime and its reverse (774561918101) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 101819165477 - 2¹⁴ = 101819149093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101819165177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50909582738 + 50909582739.

It is an arithmetic number, because the mean of its divisors is an integer number (50909582739).

Almost surely, 2^101819165477 is an apocalyptic number.

It is an amenable number.

101819165477 is a deficient number, since it is larger than the sum of its proper divisors (1).

101819165477 is an equidigital number, since it uses as much as digits as its factorization.

101819165477 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 423360, while the sum is 50.

The spelling of 101819165477 in words is "one hundred one billion, eight hundred nineteen million, one hundred sixty-five thousand, four hundred seventy-seven".