20751165103 has 2 divisors, whose sum is σ = 20751165104. Its totient is φ = 20751165102.

The previous prime is 20751165059. The next prime is 20751165121. The reversal of 20751165103 is 30156115702.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20751165103 - 2³³ = 12161230511 is a prime.

It is a super-2 number, since 2×20751165103² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20751165173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10375582551 + 10375582552.

It is an arithmetic number, because the mean of its divisors is an integer number (10375582552).

Almost surely, 2^20751165103 is an apocalyptic number.

20751165103 is a deficient number, since it is larger than the sum of its proper divisors (1).

20751165103 is an equidigital number, since it uses as much as digits as its factorization.

20751165103 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6300, while the sum is 31.

The spelling of 20751165103 in words is "twenty billion, seven hundred fifty-one million, one hundred sixty-five thousand, one hundred three".