61031078503 has 2 divisors, whose sum is σ = 61031078504. Its totient is φ = 61031078502.

The previous prime is 61031078491. The next prime is 61031078561. The reversal of 61031078503 is 30587013016.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61031078503 - 2¹³ = 61031070311 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61031078593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30515539251 + 30515539252.

It is an arithmetic number, because the mean of its divisors is an integer number (30515539252).

Almost surely, 2^61031078503 is an apocalyptic number.

61031078503 is a deficient number, since it is larger than the sum of its proper divisors (1).

61031078503 is an equidigital number, since it uses as much as digits as its factorization.

61031078503 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15120, while the sum is 34.

The spelling of 61031078503 in words is "sixty-one billion, thirty-one million, seventy-eight thousand, five hundred three".