61238849069 has 2 divisors, whose sum is σ = 61238849070. Its totient is φ = 61238849068.

The previous prime is 61238849003. The next prime is 61238849081. The reversal of 61238849069 is 96094883216.

It is a happy number.

61238849069 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 34877430025 + 26361419044 = 186755^2 + 162362^2 .

It is a cyclic number.

It is not a de Polignac number, because 61238849069 - 2¹⁶ = 61238783533 is a prime.

It is a super-2 number, since 2×61238849069² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61238843069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30619424534 + 30619424535.

It is an arithmetic number, because the mean of its divisors is an integer number (30619424535).

Almost surely, 2^61238849069 is an apocalyptic number.

It is an amenable number.

61238849069 is a deficient number, since it is larger than the sum of its proper divisors (1).

61238849069 is an equidigital number, since it uses as much as digits as its factorization.

61238849069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4478976, while the sum is 56.

The spelling of 61238849069 in words is "sixty-one billion, two hundred thirty-eight million, eight hundred forty-nine thousand, sixty-nine".