42650442761 has 2 divisors, whose sum is σ = 42650442762. Its totient is φ = 42650442760.

The previous prime is 42650442733. The next prime is 42650442841. The reversal of 42650442761 is 16724405624.

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., 31383894025 + 11266548736 = 177155^2 + 106144^2 .

It is a cyclic number.

It is not a de Polignac number, because 42650442761 - 2⁶ = 42650442697 is a prime.

It is not a weakly prime, because it can be changed into another prime (42650442701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21325221380 + 21325221381.

It is an arithmetic number, because the mean of its divisors is an integer number (21325221381).

Almost surely, 2^42650442761 is an apocalyptic number.

It is an amenable number.

42650442761 is a deficient number, since it is larger than the sum of its proper divisors (1).

42650442761 is an equidigital number, since it uses as much as digits as its factorization.

42650442761 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 322560, while the sum is 41.

The spelling of 42650442761 in words is "forty-two billion, six hundred fifty million, four hundred forty-two thousand, seven hundred sixty-one".