61501341603261 has 32 divisors (see below), whose sum is σ = 94779428244480. Its totient is φ = 34745046171264.

The previous prime is 61501341603253. The next prime is 61501341603281. The reversal of 61501341603261 is 16230614310516.

It is not a de Polignac number, because 61501341603261 - 2³ = 61501341603253 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61501341603281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15824446 + ... + 19323968.

It is an arithmetic number, because the mean of its divisors is an integer number (2961857132640).

Almost surely, 2^{61501341603261} is an apocalyptic number.

It is an amenable number.

61501341603261 is a deficient number, since it is larger than the sum of its proper divisors (33278086641219).

61501341603261 is a wasteful number, since it uses less digits than its factorization.

61501341603261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3509025.

The product of its (nonzero) digits is 77760, while the sum is 39.

Adding to 61501341603261 its reverse (16230614310516), we get a palindrome (77731955913777).

The spelling of 61501341603261 in words is "sixty-one trillion, five hundred one billion, three hundred forty-one million, six hundred three thousand, two hundred sixty-one".