61501341603253 has 2 divisors, whose sum is σ = 61501341603254. Its totient is φ = 61501341603252.

The previous prime is 61501341603217. The next prime is 61501341603281. The reversal of 61501341603253 is 35230614310516.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 58389511537809 + 3111830065444 = 7641303^2 + 1764038^2 .

It is a cyclic number.

It is not a de Polignac number, because 61501341603253 - 2⁹ = 61501341602741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61501341603553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30750670801626 + 30750670801627.

It is an arithmetic number, because the mean of its divisors is an integer number (30750670801627).

Almost surely, 2^{61501341603253} is an apocalyptic number.

It is an amenable number.

61501341603253 is a deficient number, since it is larger than the sum of its proper divisors (1).

61501341603253 is an equidigital number, since it uses as much as digits as its factorization.

61501341603253 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 194400, while the sum is 40.

Adding to 61501341603253 its reverse (35230614310516), we get a palindrome (96731955913769).

The spelling of 61501341603253 in words is "sixty-one trillion, five hundred one billion, three hundred forty-one million, six hundred three thousand, two hundred fifty-three".