40220034346861 has 2 divisors, whose sum is σ = 40220034346862. Its totient is φ = 40220034346860.

The previous prime is 40220034346823. The next prime is 40220034346931. The reversal of 40220034346861 is 16864343002204.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20739772160836 + 19480262186025 = 4554094^2 + 4413645^2 .

It is a cyclic number.

It is not a de Polignac number, because 40220034346861 - 2¹¹ = 40220034344813 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40220034340861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20110017173430 + 20110017173431.

It is an arithmetic number, because the mean of its divisors is an integer number (20110017173431).

Almost surely, 2^{40220034346861} is an apocalyptic number.

It is an amenable number.

40220034346861 is a deficient number, since it is larger than the sum of its proper divisors (1).

40220034346861 is an equidigital number, since it uses as much as digits as its factorization.

40220034346861 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 663552, while the sum is 43.

The spelling of 40220034346861 in words is "forty trillion, two hundred twenty billion, thirty-four million, three hundred forty-six thousand, eight hundred sixty-one".