2078061217357 has 2 divisors, whose sum is σ = 2078061217358. Its totient is φ = 2078061217356.

The previous prime is 2078061217339. The next prime is 2078061217409. The reversal of 2078061217357 is 7537121608702.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1192854968041 + 885206249316 = 1092179^2 + 940854^2 .

It is a cyclic number.

It is not a de Polignac number, because 2078061217357 - 2¹⁹ = 2078060693069 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2078061217357.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2078031217357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1039030608678 + 1039030608679.

It is an arithmetic number, because the mean of its divisors is an integer number (1039030608679).

Almost surely, 2^{2078061217357} is an apocalyptic number.

It is an amenable number.

2078061217357 is a deficient number, since it is larger than the sum of its proper divisors (1).

2078061217357 is an equidigital number, since it uses as much as digits as its factorization.

2078061217357 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 987840, while the sum is 49.

The spelling of 2078061217357 in words is "two trillion, seventy-eight billion, sixty-one million, two hundred seventeen thousand, three hundred fifty-seven".