61062667021 has 2 divisors, whose sum is σ = 61062667022. Its totient is φ = 61062667020.

The previous prime is 61062666967. The next prime is 61062667121. The reversal of 61062667021 is 12076626016.

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., 59311244521 + 1751422500 = 243539^2 + 41850^2 .

It is a cyclic number.

It is not a de Polignac number, because 61062667021 - 2⁷ = 61062666893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61062667121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30531333510 + 30531333511.

It is an arithmetic number, because the mean of its divisors is an integer number (30531333511).

Almost surely, 2^61062667021 is an apocalyptic number.

It is an amenable number.

61062667021 is a deficient number, since it is larger than the sum of its proper divisors (1).

61062667021 is an equidigital number, since it uses as much as digits as its factorization.

61062667021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36288, while the sum is 37.

The spelling of 61062667021 in words is "sixty-one billion, sixty-two million, six hundred sixty-seven thousand, twenty-one".