61066363869 has 96 divisors (see below), whose sum is σ = 108991733760. Its totient is φ = 32166201600.

The previous prime is 61066363823. The next prime is 61066363921. The reversal of 61066363869 is 96836366016.

It is not a de Polignac number, because 61066363869 - 2⁷ = 61066363741 is a prime.

It is a super-2 number, since 2×61066363869² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61066353869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 21150744 + ... + 21153630.

It is an arithmetic number, because the mean of its divisors is an integer number (1135330560).

Almost surely, 2^61066363869 is an apocalyptic number.

It is an amenable number.

61066363869 is a deficient number, since it is larger than the sum of its proper divisors (47925369891).

61066363869 is a wasteful number, since it uses less digits than its factorization.

61066363869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3391 (or 3388 counting only the distinct ones).

The product of its (nonzero) digits is 5038848, while the sum is 54.

The spelling of 61066363869 in words is "sixty-one billion, sixty-six million, three hundred sixty-three thousand, eight hundred sixty-nine".