61641216023 has 2 divisors, whose sum is σ = 61641216024. Its totient is φ = 61641216022.

The previous prime is 61641215981. The next prime is 61641216041. The reversal of 61641216023 is 32061214616.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61641216023 - 2¹⁴ = 61641199639 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61641216053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30820608011 + 30820608012.

It is an arithmetic number, because the mean of its divisors is an integer number (30820608012).

Almost surely, 2^61641216023 is an apocalyptic number.

61641216023 is a deficient number, since it is larger than the sum of its proper divisors (1).

61641216023 is an equidigital number, since it uses as much as digits as its factorization.

61641216023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 32.

The spelling of 61641216023 in words is "sixty-one billion, six hundred forty-one million, two hundred sixteen thousand, twenty-three".