61000100000503 has 2 divisors, whose sum is σ = 61000100000504. Its totient is φ = 61000100000502.

The previous prime is 61000100000491. The next prime is 61000100000527. The reversal of 61000100000503 is 30500000100016.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61000100000503 - 2⁹ = 61000099999991 is a prime.

It is a super-2 number, since 2×61000100000503² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61000100000303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30500050000251 + 30500050000252.

It is an arithmetic number, because the mean of its divisors is an integer number (30500050000252).

Almost surely, 2^{61000100000503} is an apocalyptic number.

61000100000503 is a deficient number, since it is larger than the sum of its proper divisors (1).

61000100000503 is an equidigital number, since it uses as much as digits as its factorization.

61000100000503 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 90, while the sum is 16.

Adding to 61000100000503 its reverse (30500000100016), we get a palindrome (91500100100519).

The spelling of 61000100000503 in words is "sixty-one trillion, one hundred million, five hundred three", and thus it is an aban number.