61555120116176 has 20 divisors (see below), whose sum is σ = 119301063507012. Its totient is φ = 30767748888576.

The previous prime is 61555120116121. The next prime is 61555120116179. The reversal of 61555120116176 is 67161102155516.

It can be written as a sum of positive squares in 2 ways, for example, as 31842591269776 + 29712528846400 = 5642924^2 + 5450920^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 61555120116176.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61555120116179) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 613146335 + ... + 613246718.

Almost surely, 2^{61555120116176} is an apocalyptic number.

It is an amenable number.

61555120116176 is a deficient number, since it is larger than the sum of its proper divisors (57745943390836).

61555120116176 is a wasteful number, since it uses less digits than its factorization.

61555120116176 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1226396198 (or 1226396192 counting only the distinct ones).

The product of its (nonzero) digits is 378000, while the sum is 47.

The spelling of 61555120116176 in words is "sixty-one trillion, five hundred fifty-five billion, one hundred twenty million, one hundred sixteen thousand, one hundred seventy-six".