61754720621053 has 2 divisors, whose sum is σ = 61754720621054. Its totient is φ = 61754720621052.

The previous prime is 61754720620987. The next prime is 61754720621057. The reversal of 61754720621053 is 35012602745716.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50039523595044 + 11715197026009 = 7073862^2 + 3422747^2 .

It is a cyclic number.

It is not a de Polignac number, because 61754720621053 - 2⁴¹ = 59555697365501 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 61754720620988 and 61754720621006.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61754720621057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30877360310526 + 30877360310527.

It is an arithmetic number, because the mean of its divisors is an integer number (30877360310527).

Almost surely, 2^{61754720621053} is an apocalyptic number.

It is an amenable number.

61754720621053 is a deficient number, since it is larger than the sum of its proper divisors (1).

61754720621053 is an equidigital number, since it uses as much as digits as its factorization.

61754720621053 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2116800, while the sum is 49.

The spelling of 61754720621053 in words is "sixty-one trillion, seven hundred fifty-four billion, seven hundred twenty million, six hundred twenty-one thousand, fifty-three".