61073159539723 has 2 divisors, whose sum is σ = 61073159539724. Its totient is φ = 61073159539722.

The previous prime is 61073159539669. The next prime is 61073159539729. The reversal of 61073159539723 is 32793595137016.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61073159539723 - 2²¹ = 61073157442571 is a prime.

It is not a weakly prime, because it can be changed into another prime (61073159539729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30536579769861 + 30536579769862.

It is an arithmetic number, because the mean of its divisors is an integer number (30536579769862).

Almost surely, 2^{61073159539723} is an apocalyptic number.

61073159539723 is a deficient number, since it is larger than the sum of its proper divisors (1).

61073159539723 is an equidigital number, since it uses as much as digits as its factorization.

61073159539723 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32148900, while the sum is 61.

The spelling of 61073159539723 in words is "sixty-one trillion, seventy-three billion, one hundred fifty-nine million, five hundred thirty-nine thousand, seven hundred twenty-three".