61298389178 has 48 divisors (see below), whose sum is σ = 100215812736. Its totient is φ = 28107181440.

The previous prime is 61298389169. The next prime is 61298389199. The reversal of 61298389178 is 87198389216.

61298389178 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 61298389178.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 42775550 + ... + 42776982.

It is an arithmetic number, because the mean of its divisors is an integer number (2087829432).

Almost surely, 2^61298389178 is an apocalyptic number.

61298389178 is a deficient number, since it is larger than the sum of its proper divisors (38917423558).

61298389178 is a wasteful number, since it uses less digits than its factorization.

61298389178 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2199 (or 2186 counting only the distinct ones).

The product of its digits is 10450944, while the sum is 62.

The spelling of 61298389178 in words is "sixty-one billion, two hundred ninety-eight million, three hundred eighty-nine thousand, one hundred seventy-eight".