40044202061 has 2 divisors, whose sum is σ = 40044202062. Its totient is φ = 40044202060.

The previous prime is 40044202031. The next prime is 40044202063. The reversal of 40044202061 is 16020244004.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39787881961 + 256320100 = 199469^2 + 16010^2 .

It is a cyclic number.

It is not a de Polignac number, because 40044202061 - 2²² = 40040007757 is a prime.

Together with 40044202063, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40044202063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20022101030 + 20022101031.

It is an arithmetic number, because the mean of its divisors is an integer number (20022101031).

Almost surely, 2^40044202061 is an apocalyptic number.

It is an amenable number.

40044202061 is a deficient number, since it is larger than the sum of its proper divisors (1).

40044202061 is an equidigital number, since it uses as much as digits as its factorization.

40044202061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 40044202061 its reverse (16020244004), we get a palindrome (56064446065).

The spelling of 40044202061 in words is "forty billion, forty-four million, two hundred two thousand, sixty-one".