61801084012 has 12 divisors (see below), whose sum is σ = 108364379760. Its totient is φ = 30839832656.

The previous prime is 61801083991. The next prime is 61801084031. The reversal of 61801084012 is 21048010816.

61801084012 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×61801084012² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15175048 + ... + 15179119.

It is an arithmetic number, because the mean of its divisors is an integer number (9030364980).

Almost surely, 2^61801084012 is an apocalyptic number.

It is an amenable number.

61801084012 is a deficient number, since it is larger than the sum of its proper divisors (46563295748).

61801084012 is a wasteful number, since it uses less digits than its factorization.

61801084012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30354680 (or 30354678 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 31.

Adding to 61801084012 its reverse (21048010816), we get a palindrome (82849094828).

The spelling of 61801084012 in words is "sixty-one billion, eight hundred one million, eighty-four thousand, twelve".