61608182904 has 128 divisors (see below), whose sum is σ = 178675891200. Its totient is φ = 19632032640.

The previous prime is 61608182897. The next prime is 61608182957. The reversal of 61608182904 is 40928180616.

61608182904 is a `hidden beast` number, since 6 + 1 + 608 + 18 + 29 + 0 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 61608182904.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17202394 + ... + 17205974.

It is an arithmetic number, because the mean of its divisors is an integer number (1395905400).

Almost surely, 2^61608182904 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61608182904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89337945600).

61608182904 is an abundant number, since it is smaller than the sum of its proper divisors (117067708296).

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

61608182904 is a wasteful number, since it uses less digits than its factorization.

61608182904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7082 (or 7072 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 45.

The spelling of 61608182904 in words is "sixty-one billion, six hundred eight million, one hundred eighty-two thousand, nine hundred four".