61066423272 has 32 divisors (see below), whose sum is σ = 152672673600. Its totient is φ = 20354592384.

The previous prime is 61066423267. The next prime is 61066423277. The reversal of 61066423272 is 27232466016.

It is an interprime number because it is at equal distance from previous prime (61066423267) and next prime (61066423277).

It is a self number, because there is not a number n which added to its sum of digits gives 61066423272.

It is not an unprimeable number, because it can be changed into a prime (61066423277) 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 7 ways as a sum of consecutive naturals, for example, 750604 + ... + 827972.

It is an arithmetic number, because the mean of its divisors is an integer number (4771021050).

Almost surely, 2^61066423272 is an apocalyptic number.

It is an amenable number.

61066423272 is an abundant number, since it is smaller than the sum of its proper divisors (91606250328).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61066423272 is a wasteful number, since it uses less digits than its factorization.

61066423272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110265 (or 110261 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 39.

Adding to 61066423272 its reverse (27232466016), we get a palindrome (88298889288).

The spelling of 61066423272 in words is "sixty-one billion, sixty-six million, four hundred twenty-three thousand, two hundred seventy-two".