61978094116 has 9 divisors (see below), whose sum is σ = 108462536049. Its totient is φ = 30988798104.

The previous prime is 61978094093. The next prime is 61978094119. The reversal of 61978094116 is 61149087916.

The square root of 61978094116 is 248954.

It is a perfect power (a square), and thus also a powerful number.

61978094116 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., 52858608100 + 9119486016 = 229910^2 + 95496^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61978094119) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 435670 + ... + 560146.

Almost surely, 2^61978094116 is an apocalyptic number.

61978094116 is the 248954-th square number.

It is an amenable number.

61978094116 is a deficient number, since it is larger than the sum of its proper divisors (46484441933).

61978094116 is an frugal number, since it uses more digits than its factorization.

61978094116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248958 (or 124479 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 52.

The spelling of 61978094116 in words is "sixty-one billion, nine hundred seventy-eight million, ninety-four thousand, one hundred sixteen".