61116672784 has 10 divisors (see below), whose sum is σ = 118413553550. Its totient is φ = 30558336384.

The previous prime is 61116672781. The next prime is 61116672959. The reversal of 61116672784 is 48727661116.

It is a happy number.

61116672784 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 61107840000 + 8832784 = 247200^2 + 2972^2 .

It is not an unprimeable number, because it can be changed into a prime (61116672781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1909896009 + ... + 1909896040.

It is an arithmetic number, because the mean of its divisors is an integer number (11841355355).

Almost surely, 2^61116672784 is an apocalyptic number.

It is an amenable number.

61116672784 is a deficient number, since it is larger than the sum of its proper divisors (57296880766).

61116672784 is a wasteful number, since it uses less digits than its factorization.

61116672784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3819792057 (or 3819792051 counting only the distinct ones).

The product of its digits is 677376, while the sum is 49.

The spelling of 61116672784 in words is "sixty-one billion, one hundred sixteen million, six hundred seventy-two thousand, seven hundred eighty-four".