61403621461121 has 2 divisors, whose sum is σ = 61403621461122. Its totient is φ = 61403621461120.

The previous prime is 61403621461093. The next prime is 61403621461139. The reversal of 61403621461121 is 12116412630416.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 61291111530496 + 112509930625 = 7828864^2 + 335425^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61403621461121 is a prime.

It is not a weakly prime, because it can be changed into another prime (61403621461421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30701810730560 + 30701810730561.

It is an arithmetic number, because the mean of its divisors is an integer number (30701810730561).

Almost surely, 2^{61403621461121} is an apocalyptic number.

It is an amenable number.

61403621461121 is a deficient number, since it is larger than the sum of its proper divisors (1).

61403621461121 is an equidigital number, since it uses as much as digits as its factorization.

61403621461121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 41472, while the sum is 38.

The spelling of 61403621461121 in words is "sixty-one trillion, four hundred three billion, six hundred twenty-one million, four hundred sixty-one thousand, one hundred twenty-one".