61161505050160 has 40 divisors (see below), whose sum is σ = 142216787717136. Its totient is φ = 24461799701760.

The previous prime is 61161505050053. The next prime is 61161505050197. The reversal of 61161505050160 is 6105050516116.

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43083379 + ... + 44480338.

Almost surely, 2^{61161505050160} is an apocalyptic number.

It is an amenable number.

61161505050160 is an abundant number, since it is smaller than the sum of its proper divisors (81055282666976).

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

61161505050160 is a wasteful number, since it uses less digits than its factorization.

61161505050160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87572461 (or 87572455 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 37.

Adding to 61161505050160 its reverse (6105050516116), we get a palindrome (67266555566276).

The spelling of 61161505050160 in words is "sixty-one trillion, one hundred sixty-one billion, five hundred five million, fifty thousand, one hundred sixty".