61744791623 has 2 divisors, whose sum is σ = 61744791624. Its totient is φ = 61744791622.

The previous prime is 61744791593. The next prime is 61744791629. The reversal of 61744791623 is 32619744716.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61744791623 - 2¹² = 61744787527 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61744791629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30872395811 + 30872395812.

It is an arithmetic number, because the mean of its divisors is an integer number (30872395812).

Almost surely, 2^61744791623 is an apocalyptic number.

61744791623 is a deficient number, since it is larger than the sum of its proper divisors (1).

61744791623 is an equidigital number, since it uses as much as digits as its factorization.

61744791623 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1524096, while the sum is 50.

The spelling of 61744791623 in words is "sixty-one billion, seven hundred forty-four million, seven hundred ninety-one thousand, six hundred twenty-three".