61925418769 has 2 divisors, whose sum is σ = 61925418770. Its totient is φ = 61925418768.

The previous prime is 61925418749. The next prime is 61925418823. The reversal of 61925418769 is 96781452916.

61925418769 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 45164750400 + 16760668369 = 212520^2 + 129463^2 .

It is a cyclic number.

It is not a de Polignac number, because 61925418769 - 2⁹ = 61925418257 is a prime.

It is a super-2 number, since 2×61925418769² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (61925418749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30962709384 + 30962709385.

It is an arithmetic number, because the mean of its divisors is an integer number (30962709385).

Almost surely, 2^61925418769 is an apocalyptic number.

It is an amenable number.

61925418769 is a deficient number, since it is larger than the sum of its proper divisors (1).

61925418769 is an equidigital number, since it uses as much as digits as its factorization.

61925418769 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6531840, while the sum is 58.

The spelling of 61925418769 in words is "sixty-one billion, nine hundred twenty-five million, four hundred eighteen thousand, seven hundred sixty-nine".