61193415550 has 12 divisors (see below), whose sum is σ = 113819753016. Its totient is φ = 24477366200.

The previous prime is 61193415529. The next prime is 61193415581. The reversal of 61193415550 is 5551439116.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 611934106 + ... + 611934205.

It is an arithmetic number, because the mean of its divisors is an integer number (9484979418).

Almost surely, 2^61193415550 is an apocalyptic number.

61193415550 is a deficient number, since it is larger than the sum of its proper divisors (52626337466).

61193415550 is a wasteful number, since it uses less digits than its factorization.

61193415550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1223868323 (or 1223868318 counting only the distinct ones).

The product of its (nonzero) digits is 81000, while the sum is 40.

The spelling of 61193415550 in words is "sixty-one billion, one hundred ninety-three million, four hundred fifteen thousand, five hundred fifty".