20213097678701 has 2 divisors, whose sum is σ = 20213097678702. Its totient is φ = 20213097678700.

The previous prime is 20213097678673. The next prime is 20213097678727. The reversal of 20213097678701 is 10787679031202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16913519886025 + 3299577792676 = 4112605^2 + 1816474^2 .

It is a cyclic number.

It is not a de Polignac number, because 20213097678701 - 2³⁴ = 20195917809517 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20213097678751) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10106548839350 + 10106548839351.

It is an arithmetic number, because the mean of its divisors is an integer number (10106548839351).

Almost surely, 2^{20213097678701} is an apocalyptic number.

It is an amenable number.

20213097678701 is a deficient number, since it is larger than the sum of its proper divisors (1).

20213097678701 is an equidigital number, since it uses as much as digits as its factorization.

20213097678701 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1778112, while the sum is 53.

The spelling of 20213097678701 in words is "twenty trillion, two hundred thirteen billion, ninety-seven million, six hundred seventy-eight thousand, seven hundred one".