61062378933649 has 2 divisors, whose sum is σ = 61062378933650. Its totient is φ = 61062378933648.

The previous prime is 61062378933637. The next prime is 61062378933767. The reversal of 61062378933649 is 94633987326016.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 52123086215424 + 8939292718225 = 7219632^2 + 2989865^2 .

It is a cyclic number.

It is not a de Polignac number, because 61062378933649 - 2²³ = 61062370545041 is a prime.

It is a super-2 number, since 2×61062378933649² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (61062378933629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30531189466824 + 30531189466825.

It is an arithmetic number, because the mean of its divisors is an integer number (30531189466825).

Almost surely, 2^{61062378933649} is an apocalyptic number.

It is an amenable number.

61062378933649 is a deficient number, since it is larger than the sum of its proper divisors (1).

61062378933649 is an equidigital number, since it uses as much as digits as its factorization.

61062378933649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 211631616, while the sum is 67.

The spelling of 61062378933649 in words is "sixty-one trillion, sixty-two billion, three hundred seventy-eight million, nine hundred thirty-three thousand, six hundred forty-nine".