61590320503 has 2 divisors, whose sum is σ = 61590320504. Its totient is φ = 61590320502.

The previous prime is 61590320443. The next prime is 61590320521. The reversal of 61590320503 is 30502309516.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61590320503 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61590320573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30795160251 + 30795160252.

It is an arithmetic number, because the mean of its divisors is an integer number (30795160252).

Almost surely, 2^61590320503 is an apocalyptic number.

61590320503 is a deficient number, since it is larger than the sum of its proper divisors (1).

61590320503 is an equidigital number, since it uses as much as digits as its factorization.

61590320503 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24300, while the sum is 34.

The spelling of 61590320503 in words is "sixty-one billion, five hundred ninety million, three hundred twenty thousand, five hundred three".