61024313491 has 2 divisors, whose sum is σ = 61024313492. Its totient is φ = 61024313490.

The previous prime is 61024313461. The next prime is 61024313591. The reversal of 61024313491 is 19431342016.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61024313491 is a prime.

It is not a weakly prime, because it can be changed into another prime (61024313461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30512156745 + 30512156746.

It is an arithmetic number, because the mean of its divisors is an integer number (30512156746).

Almost surely, 2^61024313491 is an apocalyptic number.

61024313491 is a deficient number, since it is larger than the sum of its proper divisors (1).

61024313491 is an equidigital number, since it uses as much as digits as its factorization.

61024313491 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 34.

The spelling of 61024313491 in words is "sixty-one billion, twenty-four million, three hundred thirteen thousand, four hundred ninety-one".