83415128140397 has 2 divisors, whose sum is σ = 83415128140398. Its totient is φ = 83415128140396.

The previous prime is 83415128140349. The next prime is 83415128140403. The reversal of 83415128140397 is 79304182151438.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 58410037881316 + 25005090259081 = 7642646^2 + 5000509^2 .

It is a cyclic number.

It is not a de Polignac number, because 83415128140397 - 2¹⁰ = 83415128139373 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83415128640397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41707564070198 + 41707564070199.

It is an arithmetic number, because the mean of its divisors is an integer number (41707564070199).

Almost surely, 2^{83415128140397} is an apocalyptic number.

It is an amenable number.

83415128140397 is a deficient number, since it is larger than the sum of its proper divisors (1).

83415128140397 is an equidigital number, since it uses as much as digits as its factorization.

83415128140397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5806080, while the sum is 56.

The spelling of 83415128140397 in words is "eighty-three trillion, four hundred fifteen billion, one hundred twenty-eight million, one hundred forty thousand, three hundred ninety-seven".