61489117126078 has 16 divisors (see below), whose sum is σ = 92700602467200. Its totient is φ = 30588927773976.

The previous prime is 61489117125941. The next prime is 61489117126103. The reversal of 61489117126078 is 87062171198416.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7918725 + ... + 13626607.

It is an arithmetic number, because the mean of its divisors is an integer number (5793787654200).

Almost surely, 2^{61489117126078} is an apocalyptic number.

61489117126078 is a deficient number, since it is larger than the sum of its proper divisors (31211485341122).

61489117126078 is a wasteful number, since it uses less digits than its factorization.

61489117126078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5735151.

The product of its (nonzero) digits is 8128512, while the sum is 61.

The spelling of 61489117126078 in words is "sixty-one trillion, four hundred eighty-nine billion, one hundred seventeen million, one hundred twenty-six thousand, seventy-eight".