61169792250 has 128 divisors (see below), whose sum is σ = 183675248640. Its totient is φ = 13245768000.

The previous prime is 61169792221. The next prime is 61169792251. The reversal of 61169792250 is 5229796116.

It is a self number, because there is not a number n which added to its sum of digits gives 61169792250.

It is not an unprimeable number, because it can be changed into a prime (61169792251) by changing a digit.

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 63 ways as a sum of consecutive naturals, for example, 206866 + ... + 406365.

It is an arithmetic number, because the mean of its divisors is an integer number (1434962880).

Almost surely, 2^61169792250 is an apocalyptic number.

61169792250 is an abundant number, since it is smaller than the sum of its proper divisors (122505456390).

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

61169792250 is a wasteful number, since it uses less digits than its factorization.

61169792250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 613277 (or 613267 counting only the distinct ones).

The product of its (nonzero) digits is 408240, while the sum is 48.

The spelling of 61169792250 in words is "sixty-one billion, one hundred sixty-nine million, seven hundred ninety-two thousand, two hundred fifty".