61171510552116 has 24 divisors (see below), whose sum is σ = 142753058632800. Its totient is φ = 20387712944352.

The previous prime is 61171510552093. The next prime is 61171510552121. The reversal of 61171510552116 is 61125501517116.

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, 348730291 + ... + 348905658.

It is an arithmetic number, because the mean of its divisors is an integer number (5948044109700).

Almost surely, 2^{61171510552116} is an apocalyptic number.

It is an amenable number.

61171510552116 is an abundant number, since it is smaller than the sum of its proper divisors (81581548080684).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61171510552116 is a wasteful number, since it uses less digits than its factorization.

61171510552116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 697643263 (or 697643261 counting only the distinct ones).

The product of its (nonzero) digits is 63000, while the sum is 42.

The spelling of 61171510552116 in words is "sixty-one trillion, one hundred seventy-one billion, five hundred ten million, five hundred fifty-two thousand, one hundred sixteen".