20346461402669 has 2 divisors, whose sum is σ = 20346461402670. Its totient is φ = 20346461402668.

The previous prime is 20346461402551. The next prime is 20346461402677. The reversal of 20346461402669 is 96620416464302.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17378576612644 + 2967884790025 = 4168762^2 + 1722755^2 .

It is a cyclic number.

It is not a de Polignac number, because 20346461402669 - 2¹² = 20346461398573 is a prime.

It is a super-2 number, since 2×20346461402669² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20346461402669.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20346464402669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10173230701334 + 10173230701335.

It is an arithmetic number, because the mean of its divisors is an integer number (10173230701335).

Almost surely, 2^{20346461402669} is an apocalyptic number.

It is an amenable number.

20346461402669 is a deficient number, since it is larger than the sum of its proper divisors (1).

20346461402669 is an equidigital number, since it uses as much as digits as its factorization.

20346461402669 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8957952, while the sum is 53.

The spelling of 20346461402669 in words is "twenty trillion, three hundred forty-six billion, four hundred sixty-one million, four hundred two thousand, six hundred sixty-nine".