61652025661 has 2 divisors, whose sum is σ = 61652025662. Its totient is φ = 61652025660.

The previous prime is 61652025613. The next prime is 61652025679. The reversal of 61652025661 is 16652025616.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 61593808761 + 58216900 = 248181^2 + 7630^2 .

It is a cyclic number.

It is not a de Polignac number, because 61652025661 - 2¹⁷ = 61651894589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61652028661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30826012830 + 30826012831.

It is an arithmetic number, because the mean of its divisors is an integer number (30826012831).

Almost surely, 2^61652025661 is an apocalyptic number.

It is an amenable number.

61652025661 is a deficient number, since it is larger than the sum of its proper divisors (1).

61652025661 is an equidigital number, since it uses as much as digits as its factorization.

61652025661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 129600, while the sum is 40.

The spelling of 61652025661 in words is "sixty-one billion, six hundred fifty-two million, twenty-five thousand, six hundred sixty-one".