61364881146 has 32 divisors (see below), whose sum is σ = 122999741568. Its totient is φ = 20410004160.

The previous prime is 61364881141. The next prime is 61364881189. The reversal of 61364881146 is 64118846316.

It is a happy number.

It is a super-3 number, since 3×61364881146³ (a number of 33 digits) contains 333 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 61364881095 and 61364881104.

It is not an unprimeable number, because it can be changed into a prime (61364881141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8606635 + ... + 8613761.

It is an arithmetic number, because the mean of its divisors is an integer number (3843741924).

Almost surely, 2^61364881146 is an apocalyptic number.

61364881146 is an abundant number, since it is smaller than the sum of its proper divisors (61634860422).

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

61364881146 is a wasteful number, since it uses less digits than its factorization.

61364881146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10086.

The product of its digits is 663552, while the sum is 48.

The spelling of 61364881146 in words is "sixty-one billion, three hundred sixty-four million, eight hundred eighty-one thousand, one hundred forty-six".