61635526241 has 2 divisors, whose sum is σ = 61635526242. Its totient is φ = 61635526240.

The previous prime is 61635526231. The next prime is 61635526259. The reversal of 61635526241 is 14262553616.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38525445841 + 23110080400 = 196279^2 + 152020^2 .

It is a cyclic number.

It is not a de Polignac number, because 61635526241 - 2⁶ = 61635526177 is a prime.

It is not a weakly prime, because it can be changed into another prime (61635526231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30817763120 + 30817763121.

It is an arithmetic number, because the mean of its divisors is an integer number (30817763121).

Almost surely, 2^61635526241 is an apocalyptic number.

It is an amenable number.

61635526241 is a deficient number, since it is larger than the sum of its proper divisors (1).

61635526241 is an equidigital number, since it uses as much as digits as its factorization.

61635526241 is an evil number, because the sum of its binary digits is even.

The product of its digits is 259200, while the sum is 41.

The spelling of 61635526241 in words is "sixty-one billion, six hundred thirty-five million, five hundred twenty-six thousand, two hundred forty-one".