102019027278397 has 2 divisors, whose sum is σ = 102019027278398. Its totient is φ = 102019027278396.

The previous prime is 102019027278391. The next prime is 102019027278461. The reversal of 102019027278397 is 793872720910201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 95697971461156 + 6321055817241 = 9782534^2 + 2514171^2 .

It is a cyclic number.

It is not a de Polignac number, because 102019027278397 - 2³¹ = 102016879794749 is a prime.

It is a super-2 number, since 2×102019027278397² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102019027278391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51009513639198 + 51009513639199.

It is an arithmetic number, because the mean of its divisors is an integer number (51009513639199).

Almost surely, 2^{102019027278397} is an apocalyptic number.

It is an amenable number.

102019027278397 is a deficient number, since it is larger than the sum of its proper divisors (1).

102019027278397 is an equidigital number, since it uses as much as digits as its factorization.

102019027278397 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5334336, while the sum is 58.

The spelling of 102019027278397 in words is "one hundred two trillion, nineteen billion, twenty-seven million, two hundred seventy-eight thousand, three hundred ninety-seven".